Directions : In the following questions, some parts of the sentences have errors and some are correct. Find out which part of a sentence has an error. The number of that part is the answer. If a sentence is free from error, your answer is (4) 1.e. No error.
I wish to heartily (1)/ congratulate you for (2) your astounding sucess (3)/ No error (4)

Answer

2

Explanation

When you congratulate someone on something, you give him your good wishes because something special/pleasant has happened to him. When you con gratulate someone for something you praise him for an achievement. Look at the examples given below: I.d like to congratulate you on your marriage. I.d like to congratulate the staff for their good job. Hence, congratulate you on is the right usage