After the introduction of the Frisbee Sonic, those customers who don't like to take too much risk and were willing to purchase the toy only after reading reviews of the customers who were the first to purchase, represent which group in the diffusion of innovation theory?

These group of people represent the Early majority or Pragmatists.

Explanation:

The early majority or pragmatists in the diffusion of innovation theory, are a group of people who would prefer to avoid risk by purchasing a product that has already been tested and trusted by innovators and early adopters of the product. To this effect, they tend to rely on reviews and positive feedback before they purchase.