What does 'migration' primarily refer to?

• A. The movement of people or animals from one region to another, based on a variety of different reasons
• B. The act of arriving late to work
• C. A form of energy transfer
• D. A religious ritual

Answer: (B)

Migration refers to the movement of people or animals from one place to another, typically across distances and for reasons like seeking better resources, safety, climate, or opportunities. This broad use covers both humans moving between countries or regions and animals, such as birds that travel seasonally to find suitable habitats. The other options describe different ideas altogether—arriving late to work is tardiness, energy transfer is a physics concept, and a religious ritual is a ceremonial practice—so they don’t fit the meaning of migration.