Question

look at these details from a paragraph about oak trees.

• oak trees blossom in the spring.
• oak trees turn colors in the fall.
• oak trees have no leaves in the winter.

choose the main, or central, idea that ties all the details together.
pine trees may not drop their needles for years.
oak trees have big green leaves in the summer.
oak trees look different during each season.

Explanation:

The details given are about oak trees' seasonal changes: blossoming in spring, color change in fall, no leaves in winter, and big green leaves in summer. The option "Oak trees look different during each season" ties all these seasonal - related details together. The option about pine trees is irrelevant as the details are about oak trees, and the option about oak trees having big green leaves in summer only covers one season's detail, not all.

Answer:

Oak trees look different during each season.