Question

what is the definition of thermal insulator
the process of thermal energy transfer by electromagnetic waves
state in which all parts of a system are at the same temperature
substances that thermal energy cannot move through
condition caused by the loss of too much body heat

Explanation:

A thermal insulator is defined by its property of preventing the transfer of thermal energy. Among the given options, the description "substances that thermal energy cannot move through" directly aligns with this concept. The other options describe different thermal - related concepts: thermal energy transfer by electromagnetic waves (radiation), a state of uniform temperature (thermal equilibrium), and a condition due to heat loss (hypothermia).

Answer:

substances that thermal energy cannot move through