Which one of the following compounds gives a secondary amine on reduction?

Which of the following reactions are used in the preparation of aliphatic primary amines?
$I$. Gabriel-phthalimide reaction
$II$. Hoffmann Bromamide reaction
$III$. Carbylamine reaction
$IV$. Sandmeyer reaction

Aniline is not the major product in one of the following reactions. Identify that reaction.

Which of the following is not a usual method for the preparation of a primary amine?

Predict the major product $P$ in the following sequence of reactions$-$
$(i)$ $HBr$,benzoyl peroxide
(ii) $KCN$
(iii) $Na(Hg)/C_2H_5OH$
[Image: $1-$methylcyclopentene reacting with the above reagents to form $P$]

Which of the following is Mendius reduction?