Most dolphins can recognize their own reflections in mirrors,( a recent study suggests) that those raised in isolation cannot.
A. a recent study suggests
B. However, a recent study suggests
C. Although a study recently suggesting
D. Yet a study recently suggests
E. But a recent study suggests
I have a doubt bw B and E
(E) is correct. “However” is a conjunctive adverb, so using it to connect independent clauses with only commas is impermissible. If “mirrors” were followed by a semicolon instead of a comma, (B) would be okay. @yash123
Thanks how about this one?
(A) We found that the author’s extensive use of facts and figures (B)were presuasive, though the book as a ©whole was quite (D)dull.
B. Was persuasive*
Your subject is singular (the extensive use), so it must be followed by a singular verb (was). Tense consistency.