choose the correct meaning of idiom “The birds & the bees________ :

A. Depression and low spirits
B. Remain undecided & uncomplete
C. Do favors for getting favors
D. Basic information about se*ual behaviour in humans

The phrase “the birds and the bees” is a metaphor for explaining the mechanics of reproduction to younger children, relying on imagery of bees pollinating and eggs hatching to substitute for a more technical explanation of sexual intercourse.