Who named positive and negative charges?
A) Faraday
B) Gauss
C) Benjamin Franklin
D) Curie

Hint: Electric charges have been conventionally classified into two types, based on the properties and behavior shown by them. The two classifications or types of charges are positive charges and negative charges.

Complete step-by-step answer:
Electric charges are of two types – positive charges and negative charges. This classification has been done after observing the properties of these types of charges amongst each other.
Benjamin Franklin named the two types of charges as positive charges and negative charges.
It has also been observed that like charges repel whereas unlike charges attract each other. This means that two positive charges or two negative charges will repel each other but on the other hand, a positive charge and a negative charge will attract each other.
The smallest unit of positive charge is the charge carried by the proton and is equal to $1.602\times {{10}^{-19}}C$. On the other hand, the smallest unit of negative charge is the charge carried by an electron and is equal to -$1.602\times {{10}^{-19}}C$.

So, the correct answer is “Option C”.

Note: Students must note that if a body contains more electrons than protons, it can be said that it has more negative charge than positive charge and it is negatively charged. If a body has less electrons than protons, it can be said that the body has more positive charge than negative charge and is positively charged. For a neutral body, the number of protons and electrons and hence, the amount of the two kinds of charges are exactly equal.