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English Sentence Correction QUESTION #4907
Question 1
A peculiar feature of the embryonic mammalian circulatory system is that in the area of the heart the cells adhere to one another, _____ exclusive of one another.
  • beating in unison and adopting
  • they beat in unison while adopting
  • beat in unison, and adopt
  • beating in unison yet adopting✔️
Correct Answer Explanation
Beating in unison yet adopting' uses 'yet' to convey the meaningful contrast: the cells beat together yet adopt mutually exclusive orientations. 'And' in option A fails to express this contrast. Options B and E introduce finite verb clauses that break the participial parallel. Option C uses base-form verbs that do not fit grammatically.