A major reason for the size of volcanoes on Mars is
A)The lack of tectonic activity
B)The rapid rotation rate (24.5 hours)
C)The large number of subsurface lakes
D)The lack of an intense magnetic dynamo
E)High winds

Question

Quizplus · Accepted Answer

Volcanoes on Mars can grow to be much larger than those on Earth because Mars lacks tectonic plates. Without plates to separate and cool the magma, it can continue to erupt and pile up into massive volcanoes. The other options listed are not significant factors in the size of Martian volcanoes.

A Major Reason for the Size of Volcanoes on Mars