The correct answer is d) methane (

)
The other options are elements.
Answer:
Decarboxylation is a chemical reaction that removes a carboxyl group and releases carbon dioxide (CO2). Usually, decarboxylation refers to a reaction of carboxylic acids, removing a carbon atom from a carbon chain.
Explanation:
Please give me brainlist
Answer:
element
Explanation:
elements consist of pure substances
Maybe to not get rained on.
Hahhahahaha I ain't sure tho
Answer:
<u><em>See attachment for explanations.</em></u>
Explanation: