Observe the given structure of 1-buten-3-yne where specific bonds are labeled as 'a', 'b', 'c', and 'd'. Match the labeled bonds in List I with their corresponding nature in List II. List I List II A Bond 'a' I One and two bonds B Bond 'b' II One bond formed by sp^2-sp overlap C Bond 'c' III One and one bond D Bond 'd' IV One bond formed by sp-s overlap Choose the correct answer from the options given below:

Step-by-step solution

The given molecule is 1-buten-3-yne: CH ₂= CH - C C - H . First, determine the hybridization of each carbon atom: The terminal carbon C₁ ( CH ₂= ) is bonded to three atoms with no lone pairs, so it is sp^2 hybridized. The carbon C₂ ( = CH - ) is bonded to three atoms, so it is sp^2 hybridized. The carbon C₃ ( - C ) is bonded to two atoms, so it is sp hybridized. The carbon C₄ ( C - H ) is bonded to two atoms, so it is sp hybridized. Now, analyze the labeled bonds: Bond 'a' is a double bond between C₁ and C₂ . A dou