Correct IUPAC name for the following compound is

1.
Correct IUPAC name for the following compound is

1. 3-Ethyl propylhex-1-ene2. 3-Ethyl-4-ethenylheptane3. 3-Ethyl-4-propylhex-5-ene4. 4-Ethyl-3-propyl-hex-1-ene

1. 3-Methyl-6-ethylcyclohexene2. 6-Ethyl-3-methylcyclohexene3. 3-Ethyl-6-methylcyclohexene4. 6-Methyl-3-ethylcyclohexene

1. Tetramethylmethane2. 1, 1, 1, 1-Tetramethylmethane3. 2, 2-Dimethylpropane4. 2, 2-Dimethylisopropane

1. Cyclopentylethyne2. Ethynylcyclopentane3. Cyclopentylacetylene4. Ethynyl pentane

1. 4-Ethylpent-2-ene2. 1-Ethyl-3-methylbut-2-ene3. 3-Methylhex-4-en-1-yne4. 4-Methylhex-2-en-5-yne