Multiple choice

Directions: Find out which part of a sentence has an error and indicate corresponding to the appropriate letter (A, B, C). If there is no error, indicate (D) as answer.

The ebb and flow of the tides (A) / are (B) / now understood. /(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 error is in part (B) 'are'. 'Ebb and flow' is a fixed expression treated as a singular unit (a single concept), so it requires the singular verb 'is', not plural 'are'. This is a common collective expression that takes singular form.

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