Answer:
correct option is d) March
Step-by-step explanation:
we know that when sun cross the earth equator it make day and night approx equal i.e 12 hours
this phenomena is know as equinox
it is fall twice in a every year
first come in march and another come in September
This happens on approx March 19, 20 or 21 every year
and approx September 21
so correct option are here d) March