b
\((A)\) A sigma bond is stronger thau a \(pi\)-pond. as extent of overlap is greater in sigma bond formation. Herce, option (A) is correct.

\((B)\) Bond energy of sigma bond is higher than that of \(pi\)-bond as sigma bond is stronger than pi-bond. Option (B) is in correct.

\((c)\) Free rotation of atoms about sigma bond is allowed but not in case of \(pi\) - bond. Hence, option (c) is correct.

\((D)\) A sigma bond determines the derection between carbon atoms, but a \(pi\)-bond has no primary effect in this regard. Hence, option (D) is correct