Question

___ means based on personal reasons, not established fact.
○ law
○ theory
○ arbitrary
○ aeronautics
○ delve

Explanation:

We analyze each option:

• "Law" refers to a system of rules, not related to personal reasons without fact.
• "Theory" is a well - reasoned explanation or set of ideas, based on evidence.
• "Arbitrary" means decided or done without any reason or plan, just based on personal whim, which matches the description "based on personal reasons, not established fact".
• "Aeronautics" is the science of flight, irrelevant here.
• "Delve" means to investigate deeply, not related to the given description.

Answer:

C. Arbitrary