Algebra-1

The expression that results in a natural number is: -5 + 8. -5 + 8 = 3, it is a natural number because it is a positive integer.

Option A: 8.4 – 3.2 = 5.2, it is not a natural number because natural numbers are integers without decimal parts.

Option C: 3π, it is not a natural number. 3π