Question

alligators are surprisingly helpful mothers. a female alligator builds a nest for her eggs on the shore. after she lays her eggs, she covers the nest to keep it warm. unlike many other reptiles that leave their eggs, the alligator stays to keep them safe. when the babies start making noise, the mother knows theyre ready to hatch. she may help by putting the eggs in her mouth and gently breaking the shells apart. once the babies hatch, the mother gathers them up and puts them in the water. she stays with and protects her young for as long as two years.
what is the main, or central, idea of the passage?
female alligators stay with their young for up to two years.
female alligators make very caring mothers.
female alligators build their nests on shore.

Explanation:

The passage details how female alligators build nests, stay with eggs, help hatchlings, and protect young for up to two years. These actions show care, which aligns with the idea of them being caring mothers. The other options are specific details (staying two years, building nests) rather than the central idea.

Answer:

Female alligators make very caring mothers.