In the following sentence a colon should be inserted after which word? She has four favorite colors pink, aqua, red, and navy.

It is placed after the word charity .

Explanation: "It is placed after the word charity .

This sentence is referred the word from Hannah Teter around the world as snowboarding gold in the medalist .

.we can use a  colo between independent clauses when the second sentence explains,  paraphrases, or first sentence expands on the first sentence.

Example of use of a colon in a sentence

Priyanka Received what she worked for: She really earned that promotion."

P.S. got this from google

she could put on music that makes her sleep

c, his tragic flaw to cause his downfall