Which description matches a noninfectious disease?

Which description matches a noninfectious disease?

• A. Infectious disease caused by pathogens
• B. Noninfectious disease caused by environmental conditions
• C. Disease caused by viruses
• D. Disease caused by bacteria

Answer: (B)

Noninfectious diseases are not caused by organisms that spread between people; they arise from factors like environment, genetics, or lifestyle and aren’t contagious. The description that a noninfectious disease is caused by environmental conditions fits this idea, since environmental factors can trigger disease without involving a pathogen. The other options point to diseases caused by pathogens such as viruses or bacteria, which are infectious and can be transmitted between people, so they don’t describe a noninfectious disease. For example, asthma from air pollution or lead poisoning are noninfectious, while flu or strep throat are infectious because they’re caused by viruses or bacteria.

Noninfectious diseases are not caused by organisms that spread between people; they arise from factors like environment, genetics, or lifestyle and aren’t contagious. The description that a noninfectious disease is caused by environmental conditions fits this idea, since environmental factors can trigger disease without involving a pathogen. The other options point to diseases caused by pathogens such as viruses or bacteria, which are infectious and can be transmitted between people, so they don’t describe a noninfectious disease. For example, asthma from air pollution or lead poisoning are noninfectious, while flu or strep throat are infectious because they’re caused by viruses or bacteria.