Multiple choice general knowledge math & puzzles

Which part has an error?Although we reached his house on time (a) he was left (b) for the airport (c) / no error (d)

  1. a

  2. b

  3. c

  4. d

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The sentence describes an action completed before another past action (reaching the house). It should use the past perfect tense: 'he had left'. 'He was left' is passive voice, implying someone left him there, which contradicts the context of departing for the airport.