Answer:
A person who writes a report
A person who receives a letter of appreciation
Explanation:
These are the only two answers that have to do with communicating
This question is severely broad as it all depends on a number of factors. Ibcan however provide this link with a table that you may find helpful.
http://www.businessinsider.com/at-what-temperatures-can-you-get-frostbite-or-hypothermia-2015-2
A- allow enough time to complete actvites