Declare a Read-Only Variable - upper-case SENTENCE

I have a question about this challenge.

Why is the word “sentence” required to be in upper case?

in JS, any const variables are all named in uppercase with spaces being separated by underscore.

It’s a convention like how usually other variable naming conventions are camelCase. Ex.

const FAV_PET;
let favPet;

It’s a common practice. There is nothing stopping you from doing different though.

It’s basically C legacy turned into convention. Here is a little history on the subject.