Question

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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 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, preventing human infection.
• 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.
• please choose an answer

Explanation:

The problem is about formulating a hypothesis for a virus investigation, and the key context is that low doses of ultraviolet light can kill airborne viruses. We need to find the hypothesis that aligns with this context.

• Option 1: Talks about low - temperature environment, which is not related to the given context of ultraviolet light.
• Option 2: States that if the Flu - dT2 virus is exposed to ultraviolet light, then the virus will be killed, preventing human infection. This aligns with the previous study's finding that ultraviolet light can kill airborne viruses.
• Option 3: Talks about exposure to saliva, which is not related to the ultraviolet light context.
• Option 4: The statement "it will prevent humans from catching it" is less specific about the mechanism (killing the virus) compared to Option 2. Option 2 directly links the exposure to ultraviolet light to the virus being killed (which is the mechanism from the previous study) and then preventing infection.

Answer:

B. If the Flu - dT2 virus is exposed to ultraviolet light, then the virus will be killed, preventing human infection.