_____________ commonly used to prevent vehicular access and to protect a building or people walking on a sidewalk from vehicles. They can also be used to direct foot traffic.

A.
Walls

B.
Rebar

C.
Bollards

D.
Tracks

Explanation:
Bollards are short posts commonly used to prevent vehicular access and
to protect a building or people walking on a sidewalk from vehicles. They can also
be used to direct foot traffic.