JIPMAT 2021 (VA) PYQs

In this question, four options are given for the idiom underlined in the sentence.

For his alleged involvement in espionage, he is under a cloud these days.

In the following sentence, an idiom is underlined and is followed by four options of the words. Select from the options, the one which is nearest to the underlined idiom.

'He was all at sea when he began his new job.'

Pick out the part of sentence which has an error. If there is no error mark ‘4’.
A) It wasn't necessary for her
B) To take time of work
C) when her son was ill