Organic Chemistry – Some Basic Principles Part 2

The IUPAC name of above compound is
2-bromohex-2-en-4-yne.
Now, to assign

E

Z

first assign priority to groups along the double bond. Since, h.p. groups are in opposite direction. So, E configuration will be assigned to double bond at second position.
Hence, full IUPAC name of given compound is 2E-2-bromohex-2-en-4-yne.
Hence, correct option is (c).