The following topic sentence is an opinion. It is very important to get into the

Question

The following topic sentence is an opinion. It is very important to get into the habit of wearing sunscreen of at least SPF 15 or higher every day. Which of the following provides a fact that supports this topic sentence?

A. Although humans can get vitamin D in their diets, it is also possible to acquire the recommended daily amount of vitamin D through exposure to sunlight.

B. Along with avoiding the sun and wearing sun-blocking clothing, regular sunscreen use has been demonstrated to reduce the risk of skin cancer.

C. The first sunscreens were mass-produced and sold in the 1940s. D. SPF, an acronym which stands for "Sun Protection Factor," represents a laboratory measurement for the effectiveness of sunscreen.

Explanation / Answer

Option b is correct.

A product with an SPF of 15 must have a comparable level of protection against UVA to be considered broad-spectrum.Broad-spectrum sunscreens with an SPF of 15 or higher will be able to state that they reduce the risk of skin cancer and early skin aging caused by the sun,if used as directed with other sun protection measures.US government has officially identified ultraviolet radiation (UVR) both from the sun and from tanning machines as a known cause of cancer in humans.UVR produces DNA damage that may lead to mutations (abnormalities) in genes involved in the development of skin cancer.Therefore,along with other sun safety strategies, sunscreens that absorb or block UVR serve an important protective function.

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