Enzo is gathering details about the migration of the Canadian goose. Which essential question he should ask? What do they eat?
How long do they live?
O How big are they?
When does it occur?

What do they eat?

Explanation:

Migration refers to the movement of living organisms from one place to another.

Food consumption plays a vital role in migration. When animals are in particular habitat, they are already adapted there, there's a food chain and they already know how and where to get their food.

Relocating to a new place can affect this, and they have to adapt again and look for what to eat etc. Therefore, the essential question that Enzo should ask about the migration of the Canadian goose is that "what do they eat?".

what is the question.. you are more likely giving us something to read with no question

ccd puts the honeybee populations and crop health at risk.

the above detail from paragraph 2 supports the inference about honeybee.