Which of the following is equal to 1?

We have the law of Indices as follows:

a⁰ = 1

Where a = any integer

Let us try option A.

2⁰ + 3⁰ + 4⁰ = 1 + 1 + 1

= 3

2⁰ × 3⁰ × 4⁰ = 1 × 1 × 1

= 1

(3⁰ – 2⁰) × 4⁰ = (1-1) × 1

= 0 × 1

= 0

(3⁰ – 2⁰) × (3⁰ + 2⁰) = (1-1) × (1 + 1)

= 0 × 1

= 0

So the correct answer is B.