Well i'm not sure if you're looking for a certain word but another synonym for united is joined or together and so on i would look in a thesaurus <span />
Answer:
<u>m</u><u>a</u><u>n</u><u>y</u><u> </u><u>students </u><u>are </u><u>f</u><u>o</u><u>n</u><u>d</u><u> </u><u>of</u><u> </u><u>usi</u><u>ng</u><u> </u><u>someone</u><u> else's towel</u>
The answer is B hope it helps