Which of the following topics is too broad for a 10-minute speech?

A) why our city needs more carpool lanes
B) helpful tips for your next airline flight
C) the benefits of hybrid automobiles
D) modes of transportation

Respuesta :

D
The topic is extremely vast, covering an array of sub topics which have a huge of amount of depth in each of them. Therefore, the topic is unsuitable for a 10-minute speech as one would run out of time.