Final answer:
7% is equal to 0.07 when converted to decimal form, making option C the correct answer.
Step-by-step explanation:
The student asked which of the following is equal to 7%. To convert a percentage to a decimal, you divide by 100. Therefore, 7% converted to a decimal is 0.07. This means that the correct answer to the question is C. 0.07.
The other options can be quickly evaluated: A. 17.4 is simply a number much larger than 7%; B. 74 is 7400% if converted to a percentage; and D. √7 represents the square root of 7, which is not a percentage at all but rather a mathematical operation resulting in an irrational number.