The IUPAC name of the alkene is
Z - 3 - methyl - 4 - propyl - 3 - octene
E - 3 - methyl - 4 - propyl - 3 - octene
E - ethyl - 3 - propyl - 2- heptene
Z - 2- ethyl - 2- propyl - heptene
Based on sequence rules the compound has Z configuration and longest carbon chain is taken as original compound
In the given reaction CH3−CH2−COOH (i)AgNo3−−−−−−→(ii)Br2/△[x] X will be