（） refers to the study of the internal structure of words and the rules of word formation.

A．each presents one side of the picture
B．the first generalizes the second gives examples
C．the second is the logical result of the first
D．both present Richard’s virtues and faults

A．401 (k) assets should be placed in more than one investment option.
B．Employees have to take up responsibilities for themselves.
C．Such events could happen again as it is not easy to change people’s mind.
D．Economic security won’t be taken for granted by future young workers.