A simple sentence contains the basic element that make a sentence and
that is a subject and a predicate. The sentence must one independent clause and
expresses one idea.
In the choices enumerated above
a. She enjoys golf but prefers
swimming
is not a simple sentence because it does not represent one ide but two.
If you break down the sentence, it could be:
‘She enjoys golf’ and ‘She prefers swimming’.
The rest of the choices contain one idea only.
