Current carriers in solid conductors are

Correct option is C

In solid conductors, the current carriers are free electrons. These electrons move through the lattice structure of the conductor, creating an electric current when a potential difference is applied.
Important Key Points:
1. Free electrons in metals like copper and aluminum conduct electricity efficiently.
2. The flow of free electrons constitutes the electric current in a conductor.
3. The conductivity of a material depends on the number of free electrons available.
4. Insulators have very few free electrons, making them poor conductors.
Information Booster:
 Protons: Positively charged particles found in the nucleus, do not move freely in conductors.
 Neutrons: Neutral particles in the nucleus, do not contribute to electrical conductivity.
 None of these: Not applicable as free electrons are the correct carriers.