Explanation:
<em>NHS </em><em> </em><em>CLINICS </em>- 2nd Para
<u>Researchers</u><u> </u><u>in </u><u>Cambridge</u><u> </u>- 3rd Para
just from my own understanding
John gave away nine sweaters
<span>e. b and c only
As long as a speaker lets the audience know who the author of a study is, and gives a brief overview of their credentials or qualifications, the audience should be able to trust the information that the speaker is presenting, based on their credible research.</span>