Engineer's Day in India is celebrated on the birth anniversary of which eminent personality from the field of engineering?

Introduction / Context:
Engineer's Day in India is an important professional and commemorative day that recognises the contribution of engineers to nation building. It is celebrated on the birth anniversary of a legendary engineer and statesman who played a major role in designing dams, irrigation systems, and industrial projects. Competitive examinations often ask which personality is honoured on Engineer's Day, because this connects general knowledge with Indian science and technology history.

Given Data / Assumptions:

• The question asks specifically about Engineer's Day in India.
• It wants to know on whose birth anniversary this day is celebrated.
• The options are four well known Indian scientists or mathematicians: Srinivasa Ramanujan, Aryabhatta, M. Visvesvaraya, and C. V. Raman.
• We assume the standard Indian context where Engineer's Day is linked with a civil engineer and Bharat Ratna awardee.

Concept / Approach:
The concept is association between national professional days and key historical figures. In India, Engineer's Day is celebrated on 15 September to mark the birth anniversary of Sir Mokshagundam Visvesvaraya. He was a celebrated civil engineer known for his work on the Krishna Raja Sagara dam and various water supply and flood protection projects. The approach is to recall that among the given personalities, Visvesvaraya is the one most directly connected with engineering and is officially honoured through this observance.

Step-by-Step Solution:
Step 1: Identify that the question is about Engineer's Day in India, not a general science day.Step 2: Recall that Engineer's Day is celebrated on the birth anniversary of Sir M. Visvesvaraya, a noted civil engineer and Bharat Ratna recipient.Step 3: Examine the options: Ramanujan (mathematician), Aryabhatta (ancient mathematician and astronomer), M. Visvesvaraya (civil engineer), and C. V. Raman (physicist).Step 4: Recognise M. Visvesvaraya as the correct personality associated with engineering as a profession and with this national day.Step 5: Choose M. Visvesvaraya as the correct answer.

Verification / Alternative check:
To verify, you can recall the roles of each person: Ramanujan is primarily known for path breaking work in pure mathematics, Aryabhatta for contributions to ancient mathematics and astronomy, and C. V. Raman for his discovery of the Raman effect in physics. Among these, only M. Visvesvaraya is widely known as an engineer and administrator responsible for practical civil engineering projects and economic planning, which confirms that Engineer's Day is linked to him.

Why Other Options Are Wrong:
Srinivasa Ramanujan is celebrated for his mathematical genius and has his own National Mathematics Day, not Engineer's Day. Aryabhatta belongs to a much earlier period and is primarily identified as a mathematician and astronomer rather than an engineer. C. V. Raman is honoured in physics, with National Science Day linked to his discovery, not to engineering as a profession. Therefore, while all these personalities are important, none of them is the figure whose birth anniversary is celebrated as Engineer's Day in India.

Common Pitfalls:
Students sometimes confuse Engineer's Day with National Science Day or National Mathematics Day because all involve famous scientists or mathematicians. Another pitfall is to select C. V. Raman or Ramanujan simply because their names are frequently mentioned in scientific contexts. To avoid such errors, clearly remember that Visvesvaraya was a practical civil engineer and planner, making him the natural choice for a day dedicated to engineering. Creating a mapping of each professional day with the associated personality is a good revision strategy.

Final Answer:
Engineer's Day in India is celebrated on the birth anniversary of M. Visvesvaraya.