Answer :

Let's analyze the options provided for the weight of the average brain:

A) Two ounces.
B) Three ounces.
C) Three pounds.
D) Two pounds.

The question asks for the weight of the average brain. Considering the typical weight, we need to determine which of the provided options is correct.

- Option A suggests the average brain weighs two ounces.
- Option B suggests the average brain weighs three ounces.
- Option C suggests the average brain weighs three pounds.
- Option D suggests the average brain weighs two pounds.

Comparing the options, the most accurate and reasonable weight for the average brain, based on common knowledge, is:
C) Three pounds.

Therefore, the correct answer is C) Three pounds.