Read the following selection about the study of microrobots.

The new study is a _proof of concept_type, which means that it shows something can be done successfully, even if it’s only on a small scale.

What does the author MOST LIKELY want the reader to think about microrobots based on this selection?

Not enough scientists are interested in further study of microrobots.

The microrobots are effective at cleaning the ocean, but they are much too expensive.

More work is needed to understand how the microrobots break down plastic.

More research is needed before microrobots can be used widely to clean up plastics in the ocean.

When we read passages we should be able to make inferences. In this excerpt from the article, "Tiny swimming robots may help clean up a microplastics mess," the author MOST LIKELY wants the reader to think that;

More research is needed before microrobots can be used widely to clean up plastics in the ocean.

Immediately following this sentence, the scientist Pumera said that there are different types of thermoplastics which the current robots may not be able to degrade.

In the excerpt, the scientist explains that something can be done to improve the abilities of these robots even if it is on a small scale.

This shows that more research is still ongoing on the subject because the robots can not do so much yet.

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