Which of the following statements is true?

a. spf 10 is the minimum for safe protection from the sun.
b. from 10am to 4pm are the most dangerous hours for exposure to the sun.
c. we need vitamin d from the sun so there is no unsafe exposure level.
d. there is only one kind of harmful uv ray from the sun.

What are 3 important public health tools for addressing flu outbreaks and why

What is also known as an attack in volleyball

The affordable care act has expanded mental health and substance abuse benefits to 62 million people and is an addition to the mental health parity act of 2008. the changes and additions require mental health coverage in small group and individual plans where people were not previously covered. what is the biggest benefit of these changes? what major challenges are still associated with mental health coverage? explain your reasoning.