The isomer of the molecule in the depicted image would be A.
What are isomers?
Isomers are molecules with the same chemical formula but different arrangements of their component atoms. Isomers also have different properties.
The original molecule in the image has a triple bond with 4 carbon atoms. Thus, its isomers must also have a triple bond with 4 carbon atoms.
The only option with a triple bond and 4 carbon atoms in the image is option A.
More on isomers can be found here: https://brainly.com/question/13422357
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