What is the square of the sum of 4 and 3?

To solve the problem, first identify the sum of 4 and 3. Adding these two numbers gives:

4 + 3 = 7.

Next, the question asks for the square of this sum. This means you need to multiply the sum by itself:

7 * 7 = 49.

The correct answer is therefore 49 because it accurately represents the square of the sum of 4 and 3. Understanding this involves recognizing that squaring a number means taking that number and multiplying it by itself, which in this case is the result of adding 4 and 3 together first. Hence, the answer aligns perfectly with the process described.