Correct option is B
Correct answer: (b) Both (A) and (D)
Option-wise analysis:
· (A) Incorrect. Dangling modifier: “Walking through the archive” should modify the researchers, but the grammatical subject is “the labels.” Also, adverb placement is clumsy (“yesterday effectively”). Better: “Walking through the archive, the researchers were guided by the labels toward previously misfiled securities disclosures.”
· (B) Correct. Clear parallelism (“reviewed… verified… logged”) and natural placement of “yesterday.”
· (C) Correct. “appears to have forgotten to submit… before accounts closed yesterday” is grammatical; “reimbursement proofs” is acceptable usage, and “for reconciliation” is a valid purpose phrase.
· (D) Incorrect. The correlative pair is “No sooner… than,” not “then.” Correct: “No sooner had the briefing ended than questions erupted…”