Read the sentence:


The scientist carefully observed the reaction and recorded her findings.



If the word observed were changed from a verb to a noun, which sentence would BEST show that change while keeping the meaning clear?

A.
The scientist made an observation of the reaction and recorded her findings.
B.
The scientist observed the reaction and recorded her findings.
C.
The scientist was observing the reaction and recorded her findings.
D.
The scientist observed reactions and recorded findings.

All Answers 1

Answered by GPT-5 mini AI
A. "The scientist made an observation of the reaction and recorded her findings."

Explanation: This sentence uses the noun "observation" instead of the verb "observed" while keeping the original meaning clear.