Solve: (18 ÷ 3) × (4 + 2)

To solve the expression (18 ÷ 3) × (4 + 2), we first need to follow the order of operations, often referred to by the acronym PEMDAS (Parentheses, Exponents, Multiplication and Division from left to right, Addition and Subtraction from left to right).

Starting with the expression, we begin by evaluating the operations inside the parentheses:

1. Calculate the first part: 4 + 2 = 6.

2. Calculate the second part: 18 ÷ 3 = 6.

Now, we have the simplified expression:

6 × 6.

Next, we perform the multiplication:

6 × 6 = 36.

Thus, the correct answer is 36, which matches choice C. Understanding the order of operations is crucial, as it ensures that calculations are performed systematically and accurately.