Math 6

Question Analysis
This question tests the understanding of the relationships between different subsets of real numbers.
The main focus is on the hierarchical classification of real numbers.

Key Concept Explanation
The set of real numbers is the largest set.
Natural numbers are a subset of integers (natural numbers = {1, 2, 3,...}, integers = {...,- 2,-1, 0, 1, 2,...}), rational numbers include integers and fractions, and irrational numbers, along with rational numbers, make up the set of real numbers.

Step - by - Step Solution
Analyze option A: Integers include negative numbers and 0, while natural numbers do not. So, not all integers are natural numbers.
Analyze option B: Rational numbers such as 1/2 are not integers. So, not all rational numbers are integ...