What type of punctuation should be used at the end of the following sentence?
Let's look at the bird
A question mark (?) should be used at the end of the sentence.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What type of punctuation should be used at the end of the following sentence?

### Response:
A question mark (?) should be used at the end of the sentence.