The freedom of ____________ of Hong Kong residents and their right to raise a family freely shall be protected by law.

The correct choice emphasizes the fundamental right to marriage recognized in various legal frameworks that uphold individual freedoms, particularly within the context of Hong Kong. The Basic Law of Hong Kong articulates the protection of various rights and freedoms that residents enjoy, including the freedom to marry. This reflects the principles of personal autonomy and family life that are often enshrined in constitutional documents.

The right to raise a family freely encompasses the ability to choose one's partner and to establish familial relations, which are crucial components of a stable and cohesive society. This protection allows individuals to make choices regarding their personal relationships and family structures without undue interference from the state, aligning with international human rights standards.

Other options, while significant, do not align as specifically with this context of familial rights and personal relationships as the right to marry does.