Final answer:
Each gardener receives 1/16 of the pile of pine needles.
Step-by-step explanation:
To find the fraction of the pile that each gardener receives, we need to divide 1/2 by the number of gardeners, which is 8.
So, the fraction of the pile that each gardener receives is 1/2 ÷ 8 = 1/16.
Therefore, the correct answer is A) 1/16.