Which one of the following sentences is grammatically correct?
a) Although Washington was the founder of the country and Lincoln was the preserver.
b) Our apple trees have grown amazingly well you ought to see them.
c) Mr. Hanson is out of town, however, we expect him back next week.
d) There is little we can do to help, for he is to stubborn.
This question involves identifying the most grammatically correct sentence.