Question

Which sentence is the correctly written simple sentence?

A.
Yellowstone and Yosemite are both national parks and I have visited both.

B.
Yellowstone and Yosemite are national parks.

C.
Yellowstone is a national park and Yosemite is too.

D.
Yellowstone is one national park Yosemite is another.

Answer 1

A is incorrect because there needs to be a comma after parks.
C can be reduced down to a simpler format as well as D
B is in the simplest form and the verb tense agrees with the subjects. so this one will be correct

Answer 2

thanks