What is the equivalent of 10°48' in time units?

Correct Answer: Option C — 43 min. 12 sec.

Conversion follows the standard navigational rate of 15 degrees of arc per hour of time, or 1 degree equals 4 minutes and 1 minute of arc equals 4 seconds. Multiplying 10 degrees by 4 minutes yields 40 minutes, and 48 minutes of arc multiplied by 4 seconds yields 192 seconds (3 minutes 12 seconds), totaling 43 minutes 12 seconds.