Answer:
D. Giant structure, single bonds, allotrope, one element.
Explanation:
Matter and Change => Compounds.
Remember that a compound is a substance that contains two or more elements chemically combined in a fixed proportion.
In this case, you can note that the structure contains only carbon atoms, meaning that this is not a compound because we don't have more than one element chemically combined with carbon, we just have one element (C). This structure is an allotrope. Remember that an allotrope is any of two or more physical forms in which an element can exist.
You can note that this structure can form single bonds between carbons.
Based on the given concepts, the answer would be D. Giant structure, single bonds, allotrope, one element.
