Verbal Ability - Error Detection and Cloze Tests

Directions: Read the given sentence to find out whether there is any grammatical error or idiomatic error in it. The error, if any, will be in one part of the sentence. The number of that part is the answer. If there is no error, the answer is (5). (Ignore errors of punctuation, if any).

We have recently began (1)/ the process of recruiting (2)/ insurance agents for (3)/ our North- Eastern branches. (4)/ No error (5).