substances are made of basic particles called ________.

A. Compounds
B. Atoms
C. Crystal
D. Mixtures

I think it is A am I right?

its b sorry if im late

thanks

And marie is going to believe someone who gives no explanation? I hope marie doesn't take that person's word for it!

B was my second choice

If I were a student here, I'd never believe any student with an unpronounceable name or who hands out answers without explanation.

Here are a couple of examples of other students' flawed thinking.
https://www.jiskha.com/questions/1790367/the-following-graph-shows-the-number-of-customers-who-purchased-something-from-the
and
https://www.jiskha.com/questions/1790370/70-40-21

The answer is B, atoms

Atoms are the starting point for all particles

Actually, the correct answer is B. Atoms. Substances are made up of basic particles called atoms. Atoms are the smallest units of matter that still retain the chemical properties of an element. They combine together to form molecules or ions, which in turn form compounds. Compounds, crystals, and mixtures are different types of substances that can be composed of atoms or molecules, but at the most fundamental level, all substances are made up of atoms.