How can you determine which cell data is being used in a chart?

You receive an email from an impressive-sounding stranger, professor alexander rothschild renard iii, president of the american institute for scientific political statesmen. he urges you to vote for his presidential candidate choice. this social media red flag is known as

Which of the following “invisible” marks represents an inserted tab?

If you're using the paintbrush tool and want to change the color of the paint being used what should you change