JIPMAT 2021 (VA) PYQs

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.'

Brevity is the soul __________ wit.

Give meaning of the underlined idiom as used in the following sentence:

He requested her to reconsider the decision but she put her foot down.