Question

d.
9. Conductors of heat and electricity are-
a. Metals b.non metals c. none of these​

Answer 1

Answer:

metals is the correct answer

Explanation:

hope it helps mark brainiest

Answer 2

$\huge\pink{\mathfrak{answer}}$

Metals

$\huge\pink{\mathfrak{explanation}}$

Metals are good conductors (both of heat and electricity) because at least one electron per atom is free: i.e., it is not tied to any particular atom, but is, instead, able to move freely throughout the metal.