Question

car makers have an idea to make cars \talk\ to one another. how would this work?
a cars would have names and voices.
b one car would play music and another would record it.
c one car would give off a signal that another car would pick up.
d cars would use magnets to attach to one another.

Explanation:

When cars "talk" to one another, in a technological - sense, it means communication through signals. Option C describes one car giving off a signal that another can pick up, which is how vehicle - to - vehicle (V2V) communication works in reality. Option A is more of a fictional or anthropomorphic idea. Option B has nothing to do with typical car - to - car communication. Option D is about physical attachment rather than communication.

Answer:

C. One car would give off a signal that another car would pick up.