Answer:
(c)Rational
Step-by-step explanation:
To classify -4.2, we first define the terms in the options.
Integers
Integers are positive and negative whole numbers. Examples of integers are 3, -4,0 etc.
Rational Numbers
These are numbers that can be expressed in fraction form and usually converts to a terminating or repeating decimal. Examples are 1/2, 2/5, 9/11 etc.
Irrational Numbers
These are numbers that cannot be converted to a terminating or repeating decimal. Examples are 22/7, square root of 2 etc.
Natural Numbers
This is the set of whole numbers starting from 1,2,3...
Therefore, since -4.2 is a terminating decimal, we say it is a Rational Number.