Math 6

Question Analysis
This question assesses the ability to identify a set of natural numbers by excluding non-natural numbers (negatives, zero, decimals).

Key Concept Explanation
Natural numbers are positive integers ≥1.
Sets containing zero, negatives, or non-integers are incorrect.

Step-by-Step Solution
A: Incorrect (includes 0).
B: Incorrect (includes −1 and 0).
C: Correct (only positive integers).
D: Incorrect (includes decimals 0.5, 1.5).

Common Mistakes