Answer:
C. have no real control over what they write
Step-by-step explanation:
According to the following passage from The Things They Carried, the narrator O'brien talks about the memory feeds that enter one's head and how they circle for a while before imagination meets with one of them and ideas sprout. He is of the opinion that writers should "pick a street" and allow things to flow so that they can write down ideas as they come.
O'Brien's point in this excerpt is that writers have no real control over what they write. This is because he mentions that ideas circle and writers should go with the flow which suggests that they have no real control over what they write.