Final answer:
The shortest bond among the given options is the double bond in B (C=C), but the actual shortest type of bond is a carbon-carbon triple bond, which is not explicitly given in the options.
Step-by-step explanation:
The question is asking which of the given bonds is the shortest. In chemistry, bond length is determined by the number of bonded electrons, with single bonds being the longest and triple bonds being the shortest because of greater electron sharing which pulls the atoms closer together. In the options provided, B, which represents a carbon-carbon double bond (C=C), would be shorter than A, a single carbon-carbon bond (C-C).
However, the shortest bond would be a carbon-carbon triple bond as found in alkynes. From the reference information given, the molecular structure of butyne shows a carbon-carbon triple bond. This is the shortest and strongest bond due to the presence of three shared pairs of electrons between the two carbon atoms.