In terms of the data relationships found by data mining, sequences refers to:
a. events linked over time.
b. patterns that describe a group to which an item belongs.
c. occurrences linked to a single event.
d. classifications when no groups have yet been defined.
e. undiscovered groupings.

Read the following: (1) liz has become more responsive to her partner's advances since a really beautiful woman moved in next door; (2) unable to accept his desire for other young men, 15-year-old juan immerses himself into his studies; (3) shauntel tells people that her coworker mary dislikes her; though if she were honest, shauntel would realize that it is actually she who dislikes mary; (4) "ben's nasty; he's disgusting," says renee; but renee secretly finds ben attractive. describe the defense mechanism he or she is using.