Which of the following represents a form of particulate radiation?

Particulate radiation consists of particles that have mass and can interact with matter. Beta particles, which are high-energy, high-speed electrons or positrons emitted during radioactive decay, fall squarely into this category. They possess mass and charge, which allows them to ionize atoms and create secondary radiation as they pass through materials.

On the other hand, gamma rays, radio waves, and infrared radiation are forms of electromagnetic radiation. These types of radiation travel in waves and do not have mass, thus categorizing them as non-particulate forms of radiation. Gamma rays carry energy without a mass or charge, making them fundamentally different from beta particles. Radio waves and infrared radiation also fall under the electromagnetic spectrum, lacking the characteristics that define particulate radiation. Therefore, beta particles are the correct choice as they exemplify the characteristics of particulate radiation.