What's the source on this question? Parallelism questions like this, though common on the LSAT, are very rare on the GMAT.
That being said, the key is understanding the question type. With parallelism questions, we usually can focus on one part of the argument, and that will eliminate several wrong answers, if not all of them.
This argument builds it conclusion through a chain of minor sub-conclusions; we should focus at the end. In this case, the final step leading to the ultimate conclusion can be paraphrased as "she's playing, so she's not going to a bookstore"; or, more abstractly, "X, therefore not Y."
Let's look at the conclusions:
(A) Using bugkiller, therefore wasps die ---> X, therefore Y. Not parallel
(B) Minor emergencies, therefore no major emergencies ---> X, therefore not Y. Could be.
(C) Probably not growing in cool weather ---> Not X, therefore probably not Y. Not parallel
(D) Studying, therefore jobs ---> X, therefore Y. Not parallel
(E) Not a sharp blade, therefore might be X's knife ---> Not X, therefore possibly Y. Not parallel.
We don't even need to consider the initial premises to eliminate four inconsistent answers, and realize that (B) is correct.