(Solved): The following topic sentence is an opinion. It is very important to get into the

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. SPF, an acronym which stands for “sunscreen protection factor,” repreents a laboratory measurement for the effectiveness of sunscreen.

B. 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.

C. The first sunscreens were mass-produced and sold in the 1940’s.

D. Along with avoiding the sun and wearing sun-blocing clothing, regular sunscreen us has been demonstrated to reduce the risk of skin cancer.

Expert Answer

Option D is correct

Use of sunscreen lotion help to lower the effect of sun rays on body. The sun rays cause skin damage; sun burn etc. and these problems lead to skin cancer. Hence to avoid skin cancer sunscreen lotion is used.

If we talk about the SPF, SPF is a unit that show the effectiveness of the lotion that how effective the lotion is against the sun rays.

Suppose a human skin burn in 20 minutes in sun after applying the SPF15 it will help the human to remain in sun for 20*15=300minutes.

But again it depends on skin type, Lotion quality etc.

But using SPF does not mean that the lotion will work 20*30=600 minutes in normal condition.

Here is a table to clarify what percentage the SPF units prevents the sun rays.

  • SPF 15 blocks 93% ultraviolet rays rays
  • SPF 30 blocks 97% ultraviolet rays
  • SPF 50 blocks 98% ultraviolet rays
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