Melanoma rates are higher in areas of the United States with a high number of sunny days each year. Melanoma rates have been observed to decrease in some countries in response to public health campaigns that promote regular use of sunscreen. Other types of skin cancer, which are similar to melanoma, are linked to UV exposure. Based on this information, what is the MOST comprehensive hypothesis that you can generate? Please choose the correct answer from the following choices, and then select the submit answer button. a) People who use sunscreen have lower rates of melanoma. b) People who use sunscreen have lower rates of skin cancer in general. c) Skin cancer is caused by chemicals in the skin, and these chemicals are inactivated by sunscreen. d) People who use sunscreen spend more time inside and therefore do not develop skin cancer.

Option-A

Explanation:

A hypothesis is a well-educated statement that explains the natural phenomenon based on the observation and evidence showing the possibility for further research or investigation through scientific experiments.

In the given question, the observation is that people who use sunscreen have a lower chance of developing melanoma kinds of cancer, therefore, the predicted hypothesis can be the people who use the sunscreen can have the lower rates of developing melanoma.

Thus, Option-A is correct.

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the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation: