Which sentence is written in a way that emphasizes that the subject of the sentence is doing the action? a) the key club members' spilled punch was cleaned up by the custodian. b) the custodian cleaned up the spilled punch left by the key club members. c) the spilled punch left by the key club members was cleaned up by the custodian. d) punch left on the ground by the the key club members was cleaned up by the custodian.

It is B.) because it is written in active voice meaning that you don't use linking verbs or past tense verbs like has, had.

the boy's acceleration toward the girl is 2.08 m/s^2.

explanation:

according the newton's third law, the force causing the girl accelerate towards the boy will be me with equal counter-force causing the boy to accelerate towards the girl. these forces will be of equal magnitude and allows us to determine the boy's acceleration:

the boy's acceleration toward the girl is 2.08 m/s^2.