A large sign near (1) / the entrance warns the visitors (2) / to beware about bears. (3) / No error (4)

Options

A. 1 A large sign near
B. 2 the entrance warns the visitors
C. 3 to beware about bears.
D. 4 No error

Answer

3

Explanation

of will replace about
Look at the examples given below:
Motorists have been warned to beware of icy roads. Beware of saying anything that might reveal where you live.
Hence, to beware of bears is the right usage