`LiAlH_(4)` is a best reagent to prepare unsaturated alcohol. Prove it.

Explanation

`LiAlH_(4)` (Lithium Aluminium Hydride) does not reduce the carbon - carbon double bond present in the carbonyl compound and hence it is the best reagent to prepare unsaturated alcohol.
`underset("(Prop -2- enal)")underset("Crotanaldehyde")(CH_(3)-CH=CH-CHO)overset(LiAlH_(4))underset(H_(2)O)rarrunderset("(but -2- en -1- ol)")underset("Crotyl alcohol")(CH_(3)-CH=CH-CH_(2)OH)`