The existence of a human sex pheromone has not been firmly established

Of the five approaches to Zen practice, saijojo Zen is considered the "great and perfect practice" because it is practiced

a) to attain enlightenment and thus help others. b) to liberate one's self from suffering. c) to reach a higher level of consciousness. d) without expectations.

When Lucy is unhappy with Aaron's advances, she stays focused on reading a book, ignoring him. This is an example of

a. criticism b. contempt c. withdrawal d. defensiveness