Answer:
A. The contrast suggests good and evil.
Explanation:
The story happens in Los Robles, a dingy Mexican-American bordertown ("bordertowns draw out the most exceedingly bad in a nation"). It's a position of bars, strip clubs and massage parlors, where music spills onto the road from each club. In the opening shot, we see a bomb set in the storage compartment of a vehicle, and afterward the camera cranes up and pursues the vehicle down a portion of seamy customer facing facades, before skimming down to eye level to get a walking couple. They are love birds, Mike and Susan Vargas (Charlton Heston and Janet Leigh); he's a Mexican medication authorization official.
