Statements: A. Many girls have started taking part in beauty contests in several towns in India. B. Indian girls succeeded in winning major international beauty titles such as Miss World, Miss Universe and Miss Asia.

Introduction / Context:
This question deals with social trends and their impact on international achievements. Statement A says that many girls in India have started participating in beauty contests across several towns. Statement B says that Indian girls have won major international beauty titles such as Miss World, Miss Universe and Miss Asia. We must identify whether one directly causes the other, or whether the relationship is weaker or indirect.

Given Data / Assumptions:

• Statement A: Participation of Indian girls in local and national beauty contests has increased significantly.
• Statement B: Indian contestants have succeeded in capturing several international beauty titles.
• International titles are usually the result of national level grooming, training, and competition among a smaller, selected group.
• Greater participation at the grassroots level (local contests) may improve the talent pool but does not immediately and directly produce international wins.

Concept / Approach:
We must carefully distinguish between immediate and remote causes. A remote cause is something that contributes indirectly over time, whereas an immediate and principal cause is a direct trigger. Large scale local participation (Statement A) may gradually improve the quality of contestants reaching the national stage, and then some of them may win international crowns (Statement B). However, Statement A does not act as the immediate and principal cause for the specific event of winning global titles. Many other factors, such as professional training, sponsors, and judges decisions, are involved.

Step-by-Step Solution:
1. Increased participation (Statement A) broadens the talent pool over the years.2. From this larger pool, a few highly talented and well trained contestants progress to national and international levels.3. Eventually, some of these contestants win international crowns, which is described in Statement B.4. Thus B can be seen as an effect partly influenced by A, but not in an immediate, one step causal manner.5. Therefore, the best description is that B is an effect but A is not its immediate and principal cause, since many other factors play crucial roles.

Verification / Alternative check:
If we chose the option that A is the immediate and principal cause and B is its effect, we would be oversimplifying. International wins could happen even if local level participation is limited but selection and grooming at higher levels are strong. Similarly, broader sociocultural changes, media exposure, and fashion industry growth also influence international success. That makes A a contributing or background factor, not the sole immediate cause. Therefore, the more nuanced option recognising B as an effect but not directly and solely caused by A is correct.

Why Other Options Are Wrong:
A is the effect and B is its immediate and principal cause: This would mean international wins directly caused more local participation, which is plausible, but the wording in most exam keys usually reserves this pattern for clearer, direct triggers.A is the immediate and principal cause and B is its effect: Overstates the link between local participation and international wins.Neither is related: Clearly they are related in the domain of beauty contests and talent development.A is an effect but B is not its immediate and principal cause: This reverses the direction and does not match the more natural narrative of local participation feeding into international success.

Common Pitfalls:
Students often jump to the simplest cause effect description without considering whether the cause is immediate or remote. Whenever the options mention phrases like "immediate and principal cause", think carefully about time lag and other contributing factors. Complex social outcomes, such as winning international titles, usually have multiple influences, so you should avoid attributing them to a single trigger unless the question clearly indicates so.

Final Answer:
B is an effect but A is not its immediate and principal cause.