# The below reduction reaction is known as

$\begin{array}{1 1}(a)\;\text{Catalytic reduction}&(b)\;\text{Wolff-Kishner reduction}\\(c)\;\text{Clemmenson reduction}&(d)\;\text{Rofenmund reduction}\end{array}$

Reduction of acid chloride to aldehydes in the presence of $H_2/Pd/BaSO_4$ is known as Rofenmund reduction.
Hence (d) is the correct option.
edited Apr 19