What occurs during stage 1 sleep a Both our respiration and

What occurs during stage 1 sleep?

a. Both our respiration and heartbeat quicken.

b. Both our respiration and heartbeat slow down.

c. Our respiration quickens while our heartbeat slows down.

d. Our respiration slows down while our heartbeat quickens.

The correct answer is : c.Our respiration quickens while our heartbeat slows down.

Reason: During 1st stage of sleep,our breathing starts to become regular and quick while heart rate starts to slow down.