Please help! I’m stuck on this one :)

Option D is correct

It is a compound made of twenty-four total atoms.

The scientific method- ask a question, collect information from trustworthy websites, form a hypothesis/ a logical guess to what the answer to your question is, test you hypothesis aka experiment, record and study your data/ analyze it and write it down aka documenting it, and lastly draw a conclusion figure out what the answer to your question is. Hopefully this helped.:)