If you call to him and explain your problem he will help you. A. call at him B. call upon him C. call in him D. No improvement

call at him
call upon him
call in him
No improvement

The correct answer is: D. No improvement

The sentence “If you call to him and explain your problem he will help you” is grammatically correct and conveys the intended meaning clearly. The other options are either grammatically incorrect or do not convey the intended meaning as clearly.

  • Option A: “call at him” is not grammatically correct. The correct preposition to use after “call” is “on” or “to.”
  • Option B: “call upon him” is grammatically correct, but it is a more formal way of saying “call.” It is typically used in a business or professional setting.
  • Option C: “call in him” is not grammatically correct. The correct preposition to use after “call” is “on” or “to.”

Therefore, the correct answer is: D. No improvement.