If there is no atmosphere, then the duration of daylight on earth will (a) Increase (b) decrease or (c) remain same

Question

If there is no atmosphere, then the duration of daylight on earth will
(a) Increase
(b) decrease
(c) remain same

Answer 1

Remain same.
The duration of daylight on earth depends upon the rotational movement of earth in its axis and the inclination of the axis. It doesn't depends on the atmosphere. Hence, if there is no atmosphere, the duration of daylight will not effect.