Animals that are active at night are said to be
A) free-running.
B) diurnal.
C) circumspect.
D) nocturnal.
E) free ranging.

Question

Quizplus · Accepted Answer

Nocturnal animals are active at night, while diurnal animals are active during the day. Free-running refers to an animal's biological rhythm being synchronized to an external time cue, while circumspect means cautious or wary. Free-ranging refers to animals that are not confined to a particular area.

Animals That Are Active at Night Are Said to Be