Answer: D. The deer was not able to pick up the scent of the author.
Step-by-step explanation: In the given excerpt we can see the description of how a photographer was able to take a picture of a white-tailed buck, one day when he was in the National Forest. He uses the sentence "The wind must have been right" to express his luck, because the deer wasn't able to pick up the scent of the author, and it didn't move until after the photo was taken.