When Percival Lowell insisted on the existence of Martian canals, even though his observations were discredited by other scientists, he exhibited
A) objectivity
B) stupidity
C) madness
D) personal bias

Question

Quizplus · Accepted Answer

Percival Lowell exhibited personal bias, as he refused to abandon his belief in Martian canals despite evidence to the contrary. This demonstrates a lack of objectivity and rationality, but it does not necessarily imply stupidity or madness.

When Percival Lowell Insisted on the Existence of Martian Canals