the answer is a), why is "lasting" right instead of "last"? i got this question right because "lasting" sounded right but iwant to know why its right.



Varieties of influenza range in severity from mild flus, treatable with bed rest and lasting only a few days, to acute forms, such as bacterial pneumonia, that are potentially fatal.


a) mild flus, treatable with bed rest and lasting only a few days, to

b) mild flus, treatable with bed rest and last only a few days, to

c) mild flus, treatable with bed rest, and they last only a few days, to

d) those mild flus, able to be treated with bed rest and in duration only a few days, to those

e) those mild flus which are treatable with bed rest and which last only a few days to those