What was the original Nerf toy?

Here is the question :

WHAT WAS THE ORIGINAL NERF TOY?

Here is the option for the question :

Foam ball
Tennis ball
Water gun
Dart blaster

The Answer:

And, the answer for the the question is :

FOAM BALL

Explanation:

[STC005171] Although Nerf is most commonly associated with its line of blasters, the company’s original product was actually a foam ball measuring four inches in diameter and was released in the year 1970. It was touted as a harmless indoor ball that wouldn’t shatter windows or break lamps, and that’s exactly what it did. The Nerf Bow and Arrow was the first toy weapon the company ever produced, and it was released in the year 1991.