Question

Symbol of Calcium is _____.
(A) $Ca$
(B) $cal$
(C) $C$
(D) None of the above

Answer 1

The symbol of the element calcium will definitely be the initials of it whether that be first one or first two or first three; depending on the culture the element belongs.
The basic knowledge about the given element and the modern periodic table can help us solve this question.

Complete step by step answer:
Let us start with knowing all the basics of calcium;
Calcium-
It is one of the alkaline earth metals of group 2 of the periodic table. It is as well the most abundant element (metallic) in the human body and is the fifth most abundant element in the earth’s crust.
It is a reactive metal with atomic number 20 and is ductile metal, silver in colour. In fact, calcium is the first lightest element to have six naturally occurring isotopes (5 stable). The average atomic mass of the element is 40.08 g/mol.
Calcium, symbolically represented as ‘$Ca$’ is the vital element in the human body i.e. in teeth, bones, and in our nervous system. It does not occur naturally; the compounds of calcium are common in our day to day lives. The most common is limestone.

Thus, we can say that the symbol of Calcium is $Ca$. Hence, option (A) is correct.

Note: Do note that the symbols assigned globally are empirical for particular substance or material or organisation, etc.
In that way as Calcium is being assigned as ‘$Ca$’; units of energy i.e. calories are being assigned with ‘$cal$’ and the element Carbon is being assigned with ‘$C$’.