Answer:
A. Last week Mark started coming home late, missing classes, and arguing with his parents
Step-by-step explanation:
A parallel structure is used when the same pattern is repeated and the same pattern has the same function. For example, in the statement above, the verb to start is used with some complements. The complements , which refer to different activities, are expressed through participles ( _ing): starting...; missing ...and arguing..... These are all participles and function as the complement of to start.