In the following question on synonyms, out of the four given alternatives, select the one which best expresses the meaning of the word "Nauseous".

Introduction / Context:
This question asks for the synonym of "nauseous", a word often used in both everyday and medical contexts. While many learners know that it is related to feeling sick, they may not be aware of its extended sense describing something that causes disgust. Understanding both senses helps in finding the best match among the options.

Given Data / Assumptions:

• Target word: "Nauseous".
• Options: "Loathsome", "Benevolent", "Worthy", and "Considerable".
• "Nauseous" can describe a physical feeling of wanting to vomit or something that is disgusting.
• The exam usually focuses on the general sense of causing nausea or disgust.

Concept / Approach:
When something is described as "nauseous", it can mean that it creates a feeling of nausea, physical or moral. For example, a terrible smell or a shocking crime can be called nauseous because they make you feel sick or deeply disgusted. The word "loathsome" means causing hatred or disgust, and therefore closely matches this sense. The other options are positive or neutral and do not relate to sickness or disgust at all.

Step-by-Step Solution:
Recall that "nauseous" is linked to nausea, the sensation of wanting to vomit.Understand that, figuratively, the word can describe anything deeply unpleasant or disgusting.Check the options: "Benevolent" means kind, "Worthy" means deserving respect or merit, and "Considerable" means large in amount or importance."Loathsome" means extremely unpleasant and causing strong dislike or disgust.Therefore, "Loathsome" is the correct synonym for "Nauseous".

Verification / Alternative check:
Consider example sentences: "The nauseous smell from the garbage made everyone leave the room" could also be expressed as "The loathsome smell from the garbage made everyone leave the room." Both indicate that the smell was severely unpleasant. Replacing "nauseous" with "benevolent", "worthy", or "considerable" would create sentences that do not make any sense.

Why Other Options Are Wrong:
Option B, "Benevolent", refers to kindness and goodwill, and is completely opposite in emotional tone. Option C, "Worthy", is positive and has nothing to do with sickness or disgust. Option D, "Considerable", speaks about degree or amount, not about emotional reaction. None of these words are related to the physical or moral revulsion expressed by "nauseous".

Common Pitfalls:
Some learners treat "nauseous" and "nauseated" as interchangeable and think only of the physical feeling of sickness. While this is part of the meaning, exam setters often use the extended sense of "disgusting". Recognising that "loathsome" fits this broader sense avoids confusion and ensures you pick the correct synonym quickly during the test.

Final Answer:
The correct synonym for "Nauseous" is Loathsome.