Final answer:
The common reason for not practicing safer sex according to communication researchers is that alcohol impairs an individual's thinking. This often leads to risky behaviors and a neglect of proper safe sex practices.
Step-by-step explanation:
One common reason for not practicing safer sex that communication researchers have found is e. Alcohol impairs their thinking. This impairment can lead to increased risk-taking behavior, including the neglect of safe sex practices like using condoms or other forms of protection. Alcohol and the substance-induced lapse in judgment may contribute to the higher prevalence of STIs among young people. Young individuals are also more likely to engage in risky behaviors and may hold the belief that they are invulnerable to consequences such as STIs. Combined with potential gaps in sexual education and access to resources, these factors create an environment where STIs can spread more easily among youth.