Answer:
a. It criticizes the way some readers try to understand a poem
Step-by-step explanation:
Billy Collins makes a great reference to how some readers try to understand a poem, by saying that they begin beating it with a hose, trying to explain that they take everything too rough and do not consider all the factors, nor try with the care and importance that analyzing a poem should have, he writes in his poem the ways to understand a poem, speaks about
"I want them to waterski
across the surface of a poem
waving at the author’s name on the shore."
Speaking about a way of getting to know the poem and investigate, about feeling it and letting it take you places, but all what readers want to do is easily and quickly understand it.