Which term allows us to create new classes based on existing classes.
polymorphism
inheritance
function overloading
the copy constructor

The correct answer for the given question inheritance.

Explanation:

The process of deriving the New class from the old class is known is inheritance .Inheritance provide reusability .Their are many types of inheritance

1.Single level

2.Multilevel

3.Multiple

4.Hybrid.

Polymorphism means express the object in more then one form  thats why "Polymorphism "is wrong answer acccording to question.

Function having same name but different parameter this is known as function overloading thats why  "function overloading "is wrong answer acccording to question.

constructor are used to initialize variable .Copy constructor means we pass the reference of constructor into other constructor this is known as copy constructor thats why "The copy constructor"  is wrong answer acccording to question.

So the correct answer is " Inheritance".

Reactants are the factors that yield the subdivision of a molecule. Products are the result of this division. In other words, reactants are left of the equation and products are on the right. P+O are reactants, but the product is not shown.