Question

read the paragraph.
the great barrier reef, located near australia, is made up of over 2,000 individual coral reefs. thousands of different species of plants and animals live there. one explorer described the reef as \a wall of coral rock\ in the ocean. this \wall\ makes it difficult for ships to pass through. in fact, there have been at least 30 major shipwrecks there.
why is the word barrier a good word to include in the name of this reef?
○ many plants and animals live there.
○ it is made up of smaller coral reefs.
○ one explorer discovered large rocks there.
○ it is difficult to pass through.

Explanation:

To determine why "barrier" is a good name, we analyze each option:

• Option 1: The paragraph says "many plants and animals live there" but this doesn't relate to "barrier" (barrier implies an obstacle to passage, not just biodiversity).
• Option 2: The text states the reef is made of "over 2,000 individual coral reefs", not smaller coral reefs making it a barrier.
• Option 3: The passage mentions an explorer described it as a "wall of coral rock", not discovering large rocks.
• Option 4: The paragraph says the "wall" (coral rock) "makes it difficult for ships to pass through" and there are 30+ shipwrecks. This matches the idea of a "barrier" (something that blocks or makes passage difficult).

Answer:

The correct option is: "It is difficult to pass through." (The option with the text "It is difficult to pass through.")