Answer:
3-Methylhex-2-ene
Explanation:
You count the atoms in the stems of the names and add them up.
C. 3-Methylhex-2-ene
Methyl = 1C
Hexene = 6C
Methylhexene = 7C
A. 2-Methylhept-1-yne is wrong. It has 1C + 7C = 8C
B. 2-Methylpropane is wrong. It has 1C + 3C = 4C
D. 3-Methylpent-1-ene is wrong. It has 1C + 5C = 6C
