Problem
Evaluate the expression, or state that the expression is not a real number. \[ \sqrt{16} \] Select the correct choice below and, if necessary, fill in the answer box to complete your answer. A. The expression is a real number $\sqrt{16}=$ B. The expression is not a real number.
Solution
Step 1 ：Find the square root of 16: \(\sqrt{16}\)
Step 2 ：The expression is a real number: \(\sqrt{16} = 4\)
