CAT 2021 Tenses — Previous Year Question

The sentence is underlined in three separate parts and each one is labeled as (a), (b), (c). Read the sentence to find out whether there is an error in any underlined part. No sentence has more than one error. If you think there is no error in any part, you can choose option (d): If she will be promoted (a)/ she will get (b)/ a higher salary. (c)/ No error (d).