The Correct answer is Option 2. Explanation & Key Takeaways: The passage clearly explains the main reasons behind brain drain. It states that trained professionals migrate from developing countries to developed countries due to higher wages and better living and working conditions. • Statement (a) is correct because the expectation of higher salary packages is explicitly mentioned as a motivating factor. • Statement (b) is also correct since better job opportunities and superior facilities in developed countries attract skilled professionals. • Statement (c) is incorrect because migration is driven by individual self-interest, not by an intention to develop another country. • Statement (d) is incorrect as brain drain is related to employment and living conditions, not tourism. Therefore, the correct answer is Option 2: Only a and b.