Einstein (21) was however also publishing papers in physics.
was however also
A.was, however, also
B.was however, also
C.was, however also
D.no error
I think it is A...?
Right.
Great...thank you
You're welcome.
The correct answer is D, "no error."
In this sentence, the words "was," "however," and "also" are correctly placed. "Was" is the past tense form of the verb "to be" and is used to indicate that Einstein published papers in physics during that time. "However" is an adverb that suggests a contrast or contradiction, and "also" is an adverb that means "in addition."
Therefore, the sentence is grammatically correct as it is, and no punctuation changes are necessary.