Q: What two basic types of feather does a bird have?


Read this paragraph and choose the correct option from the provided answers:

Feathers help birds fly and also provide insulation and serve other purposes. Birds actually have two basic types of feathers: flight feathers and down feathers. Both are shown in Figure below . Flight feathers are long, stiff and waterproof. They provide lift and air resistance without adding weight. Down feathers are short and fluffy. They trap air next to a bird’s skin for insulation.

 Choices:

- carrying and down

- up and down

- flight and landing

- flight and down


A:
flight and down