d. Empiricism
As empiricism is basically an experience derived from senses. So here through the text we can see that empiricism is very evident.
Answer:
The incorrect sentence is C. We should not buy grapes which scientists say are poisonous to dogs.
Explanation:
The commas should be placed like so,
We should not buy grapes which, scientists say, are poisonous to dogs.
I hope I helped!
