From the given options, choose the one that rightly explains the given expression-

‘To shed crocodile tears’

To grieve insincerely

The idiom "to shed crocodile tears" most clearly explains to grieve insincerely. The idiom comes from the literal meaning of crocodiles shedding tears, which is actually a way for them to attract prey. In the same way, when someone is said to be "shedding crocodile tears," they are pretending to be sad or upset, but they are not actually feeling those emotions.

The other options are not as accurate. To weep profusely means to cry a lot. To grieve and feel low means to be sad or upset about something. To weep for crocodiles means to cry for crocodiles, which is not a common occurrence.