I think it might be c. but is it is wrong just tell me
Answer:
Lincoln said:
"I am glad I made the late race. It gave me a hearing on the great and durable questions of the age, which I could have had in no other way; and though I now sink out of view, and shall be forgotten, I believe I have made some marks which will tell for the cause of civil liberty long after I am gone."
-Lincoln After Losing 1858 Senate Race
Answer:
a. I am now swimming for an hour.
b. he has been playing this guitar since he was seven years old.
c. how long are they discussing?
d. she's been collecting dolls for 3 years
e. the office has been using this machine since 1997.
I believe it’s 2, the great works of literature