What is the equivalent of 2° 35' in time units?

Correct Answer: Option D — 10 min. 20 sec.

Converting arc to time uses the relationship where 15 degrees equals 1 hour, 1 degree equals 4 minutes, and 1 minute of arc equals 4 seconds of time. Thus, 2° equals 8 minutes and 35' multiplied by 4 seconds equals 140 seconds (2m 20s), totaling 10 minutes and 20 seconds.