Sure, I can help you with that. Here are the steps on how to circle the letter of the correct answer:

1. Read the question carefully.
2. Look at the answer choices.
3. Circle the letter of the answer that you think is correct.
4. If you are not sure of the answer, you can skip the question and come back to it later.

Here are some examples of questions with answer choices:

* What is the capital of Somalia?
* A. Paris
* B. London
* C. Mogadishu
* D. Rome

The correct answer is C. Mogadishu.

* What is the square root of 16?
* A. 2
* B. 4
* C. 8
* D. 16

The correct answer is B. 4.

* What is the sum of 1 + 1?
* A. 2
* B. 3
* C. 4
* D. 5

The correct answer is A. 2.

I hope this helps!