Which option correctly defines 'migrate'?

• A. To move from one region or country to another
• B. To travel by air
• C. To stay in one place
• D. To visit periodically

Answer: (A)

Migration means relocating from one place to another, often across regions or countries, and usually involves establishing a new place to live rather than just passing through. That makes it the best fit for the word, since it emphasizes moving residence rather than simply traveling or staying put.

The other ideas describe different kinds of movement: traveling by air is about the method of getting somewhere, not about changing where you live; staying in one place is the opposite of moving; visiting periodically implies short, temporary trips without settling in a new home. Birds, for example, migrate to take advantage of seasonal conditions, which captures the sense of moving to a different location for a period of time, often with the purpose of living there temporarily or seasonally.