Math 6

Question Analysis
This question assesses subset relationships using set notation.
The main focus is recognizing that a subset must be entirely contained within a larger set.

Key Concept Explanation
Subset (⊆): Set A is a subset of set B if every element of A is also an element of B.
Natural numbers (N) are contained within whole numbers (W), which are contained within integers (Z).
Integers include elements not in W or N (negative numbers), so Z cannot be a subset of N or W.

Step-by-Step Solution
Option A: N ⊆ W is true because whole numbers = N ∪ {0}.
Option B: W ⊆ Z is true because integers include all whole numbers and negatives.
Option C: Z ⊆ N is false because integers contain ...