Question

examine the \what\ section of the \beat the heat\ infographic. what evidence and details are included in this section to support the main idea of the infographic?
where extreme heat is most rare
the defining factors of extreme heat
the people most affected by heat

Explanation:

The "What" section defines extreme heat as occurring when temperatures reach extremely high levels or when heat - humidity combination makes air oppressive. This details the defining factors of extreme heat.

Answer:

the defining factors of extreme heat