Trans-2-pentene is the name of the opposite stereoisomer of the molecule shown in the figure. Hence, option A is correct.
What is a stereoisomer?
Stereoisomers are isomers that have the same composition but that differ in the orientation of those parts in space.
When two or more compounds differ in the position of substituent atom or functional group on the carbon skeleton, they are called position isomers and this phenomenon is termed as position isomerism.
Pent-2-ene and pent-l-ene are position isomers because differ in the position of double bond.
The two stereoisomers are (Z)-pent-2-ene and (E)-pent-2-ene.
Hence, option A is correct.
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