Synonym of EMPIRICAL

Answer: Option C

Spiritual : relating to or affecting the human spirit or soul as opposed to material or physical things.
Royal : having the status of a king or queen or a member of their family.
Practical : of or concerned with the actual doing or use of something rather than with theory and ideas.
Theoretical : concerned with or involving the theory of a subject or area of study rather than its practical application.
Empirical : based on, concerned with, or verifiable by observation or experience rather than theory or pure logic.

Synonym of Empirical is Practical