The answer is B, The relative pronoun is that; it functions as part of the adverb clause.
Answer:
I think it is B
Explanation:
From eating too many berries.
Answer:
irritation
Explanation:
they all come from a verb "irritate"
A similar pair would be answer C.
The answer to you question could be while staring at the sun, it hurts my eyes or it could when i stare at the sun, it hurts my eye.
