In order to solve this exercise it is important to remember the definition of ""Product".
In Mathematics, the Product is the result of a multiplication. For example:
[tex]2\cdot2=4[/tex]The Product of the multiplication shown above is 4.
Based on the explained above, you can identify that the word "product" given in the exercise indicates a multiplication.
Therefore, the expression for "The product of c and 3" is the one shown below:
[tex]c\cdot3[/tex]The answer is:
[tex]c\cdot3[/tex]