Concept: Savigny is associated with the Historical School of Jurisprudence. According to this school, law is not created suddenly by the sovereign, but grows with the life, customs and consciousness of the people.
Step 1: Understand the term Volksgeist.
Volksgeist means the spirit of the people or the common consciousness of the people.
\[
\text{Volksgeist} = \text{General consciousness of the people}
\]
Step 2: Connect Volksgeist with law.
Savigny believed that law develops naturally from the customs, traditions and social habits of a community.
\[
\text{Customs + Traditions + People's consciousness} \Rightarrow \text{Law}
\]
Step 3: Choose the correct jurist.
Since the idea of Volksgeist is directly connected with Savigny, the correct answer is Savigny.