Question

Which sentence has correct punctuation?
A.
In biology class, Tyra is working with an expensive-phase-contrast microscope.
B.
In business class, Rita is learning to develop cost-effective marketing programs.
C.
In shop class, James is making a dining room table out of coarse grained wood.
D.
In physics class, Paolo is studying the strength-to weight ratio of building materials.

Answer 1

B

"Cost-effective" is correctly hyphenated. The other choices need hyphens (A: remove or reposition hyphen; C: "coarse-grained"; D: "strength-to-weight").