Multiple choice question - choose single answer

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Jul-2021

Read the text and answer the multiple-choice question by selecting the correct response. Only one response is correct.

Submarine Operators

Submarine operators have been alerted to the dangers of sea snails in a recent study. An international research team says the hardy deep-sea animals latch on to the submarines used by scientists. potentially spreading disease in pristine ecosystems. The limpet is a sea snail that lives 2,000 meters underwater but can also survive in the air when a submarine emerges from the water. If it goes unnoticed, the limpet can find itself in another habitat the next time the submarine is used. As 90 percent of limpets are infected by parasites, this poses a threat to the ecosystem; but thoroughly cleaning the submarines will solve the problem.

What problem does the article mention in relation to sea snails?

a) Research into sea snails has been harming the animals themselves.b) Sea snails are being carried by submarines to places where they harm other species.c) Sea snails are spreading diseases to the research scientists on submarines.d) Dirty submarines are endangering the well-being of the sea snails that attach

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