Final answer:
To divide fractions, multiply the first fraction by the reciprocal of the second fraction. In this case, 1/2 ÷ -1/4 equals -2.
Step-by-step explanation:
To divide fractions, we need to multiply the first fraction by the reciprocal of the second fraction. In this case, the reciprocal of -1/4 is -4/1. So, we have:
1/2 ÷ -1/4 = 1/2 × -4/1 = -4/2 = -2/1
Therefore, the answer is -2, which corresponds to option A.