Jen has fair skin, and both her mother and her aunt have been treated for skin cancer. This coming weekend, Jen and her friends are planning an all-day outdoor hike near a high-elevation mountain lake; she expects there will be a mix of sun and shade on the trail and at the lakeshore beach. She is looking forward to the hike, but she wants to avoid getting a sunburn or any sun damage. Jen should do all of the following before leaving for the hike EXCEPT buy or borrow a broad-brimmed hat. consult the forecast for UV index to help determine how sunny it will be. visit a tanning salon to get a light tan to protect her skin. pack a full bottle of sunscreen in her backpack. A. after climbing a hill and sweating heavily.
B. 30 minutes before sun exposure begins.
C. 2 hours after sun exposure begins.
D. All answer choices are correct.