Answer: The correct answer is "the substance loses electrons due to friction".
Step-by-step explanation:
A static charge is developed by rubbing the two surfaces of the object which are not good conductor of electricity. The electrons are transferred from one material to the other. These charges accumulate on the surface of the object.
This accumulation of the imbalanced charges on the material results in the static electricity.
The material which acquires the electrons will get negatively charged.
For example, While combing the hairs by using a comb.
Therefore, a static charge is developed in a substance as the substance loses electrons due to friction.