Question

which sentence is a run-on sentence ?
A- john glenn frist travled into space in 1962 , and he made his second space flight 36 years later.
b- sally ride was the frist american woman in space, she was a member of a shuttle crew.
c- john glenn was an astronronaut; he was the first american to orbit earth.
d- when john glenn travled on the space shuttle discovery, he was 77 years old.

Answer 1

a

Answer 2

yea!

Answer 3

a is right