Final answer:
Option A). Transmission-based precautions are a set of precautions that are used to prevent the transmission of diseases. The three types of transmission-based precautions are airborne, droplet, and contact.
Step-by-step explanation:
Precautions known as "transmission-based precautions" are designed to stop the spread of specific diseases from one person to another. There are three categories of precautions based on transmission: 1) Airborne: pathogens spread through direct contact between an infected person and a new host, such as skin-to-skin contact or touching the same surfaces; 2) Droplet: pathogens spread through direct oral contact or contact with infected bodily fluids; and 3) Contact: pathogens spread through direct contact between an infected person and a new host.