The last word of the passage "them" refers to ______.

A．They would rather be aggressive than be assertive.
B．It's often better to give people hints than to be straightforward.
C．Their needs to express themselves take secondary place before important persons.
D．They tend to give excuses and justifications for their actions.

A．makes other people feel unfairly treated
B．puts forward his ideas at the expense of others
C．does not show respect to other people
D．speaks out what he wants to say forcefully