Choose the best one: People are worried ___________ losing their jobs during the Covid-19 pandemic.

Knowledge: Prepositions

Explain:

A. about (prep): about

B. of (prep): of

C. at (prep): at

D. over (prep): over, too

=> Phrase: be worried about something: worry about something

People are worried about losing their jobs during the Covid-19 pandemic.

Choose A.