In the following questions,some of the sentences has errors and some are correct.Find out which part of a sentence has an error. If a sentences is free from errors,your answer is (d).
`("Due to heavy work")/a` `("in the office")/b` `("I was unable to catch the five thirty trains")/c` `("No error")/d`

Answer

2

Explanation

at the office will replace in the office because - at (Prep.) is used with places, inside/outside. in (Prep.) is also used with places, inside/outside. Look at the examples given below : I work at the bank. The money is in the bank.