Question

a pharmaceutical company is investigating how ultraviolet light affects the spread of a strain of the flu virus called flu - d12. previous studies have shown that low doses of ultraviolet light can kill airborne viruses. which of the following statements would be the best hypothesis for the flu - d12 virus investigation? if the flu - d12 virus is exposed to saliva at room temperature, then the virus will be killed, preventing human infection. if the flu - d12 virus is exposed to ultraviolet light, then it will prevent humans from catching it. if the flu - d12 virus is in a low - temperature environment, then the spread of the virus will be slowed. if the flu - d12 virus is exposed to ultraviolet light, then the virus will be killed.

Explanation:

The investigation is about how ultraviolet light affects the spread of Flu - d12. A good hypothesis should directly relate to this variable. The first option is about saliva, the third is about temperature, and the second is about prevention in humans which is not as direct as the fourth one. The fourth option directly states the effect of ultraviolet light on killing the virus which is in line with the investigation's focus.

Answer:

If the Flu - d12 virus is exposed to ultraviolet light, then the virus will be killed.