Any one know the answer to
This question from Common lits “ Smartphones put your privacy at risk

Explanation:

This article showed that phones could be used to collect improper information about a person using the sensors it has such as motion and sound data. Researchers showed that these could be used to infer pins and therefore access sensitive apps like bank apps on the phone.

The article also showed however, that there are active efforts aimed at curbing this type of information gathering such as improvements in operating system software and the removal of applications that gather such information from app stores.

the correct answer would be:  

a. adverb phrase

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