にづくり is a compound of the kun'yomi 荷 (に) and the noun form づくり derived from the kun'yomi of 造 (つくる). 荷 means cargo, and 造 means to make. Incorrect readings like にづくりょう add extra sounds. This term refers to the act of packing or packaging goods, preparing them for transport or storage by wrapping or boxing them.

にづくりは荷（に）と造（つくる）の組み合わせで、荷物を包装し、運搬や保管に適した状態にすることです。他の選択肢は不自然な音の追加や誤読です。