Question

look at these details from a paragraph about the same topic: • some makeup and face creams are made with algae. • in addition, algae is found in products used to thicken soups and sauces. • algae is also used in products that help fertilize growing plants. choose the main, or central, idea that ties all the details together. algae grows in a number of places. scientists use algae to help make new medicines. algae is an important ingredient in various products.

Explanation:

The details mention algae in makeup, face - creams, thickening products, and fertilizers. This shows its use as an ingredient in various products. The first option is about where it grows, not its uses. The second option about new medicines is not mentioned.

Answer:

Algae is an important ingredient in various products.