Three of the most common shapes of screw heads are the flat head, round head, and ____ head.
A) square
B) oval
C) oblong
D) pentagonal

Question

Quizplus · Accepted Answer

The flat head and round head are both common shapes of screw heads, making option A and C incorrect. The pentagonal head is not a common shape of screw head, making option D incorrect. The only remaining option is B, which correctly identifies the oval head as the third most common shape of screw head.

Three of the Most Common Shapes of Screw Heads Are