Read the following paragraph and select the most important supporting detail. Take an animal the size of a pencil eraser. Combine it with millions of plantlike creatures called algae, which live in the animal's body. You get a coral polyp. Corals are animals that can also act like plants. That's how they became the master builders of almost 3,000 coral reefs that make up the Great Barrier Reef. Corals are animals that can also act like plants. You get a coral polyp. Combine it with millions of plantlike creatures called algae, which live in the animal's body: Take an animal the size of a pencil eraser. That's how they became the master builders of almost 3,000 coral reefs that make up the Great Barrier Reef.

Read the passage. the dust bowl during the 1930s, extreme drought and high winds made life incredibly difficult in the great plains region of the united states. in many areas, rainfall was forty percent less than normal. the soil became extremely dry, and when strong winds blew, they created tremendous dust storms. these so-called “black blizzards” were so thick that they made daylight seem like dusk. during this terrible period, the great plains region of the united states was named the “dust bowl.” over the next few years, the drought continued, and the winds created more dust storms. in some places, the drought and high winds lasted for eight years. many people wondered if the black blizzards would ever end. which statement about this paragraph’s main idea is true? this paragraph’s main idea is stated in the topic sentence. there are not enough details to support the main idea. this paragraph’s main idea is implied. this paragraph does not express a main idea.