Huh? Part (c) is a definition. Substitute the definition of part (c) into the rule in part (a).
(c) For the purposes of this section:
"this section" is a reference to the entirety of section 45.2 of 28 CFR.
(1) Political relationship means ...
The word "means" here implies that what follows is a definition.
Where is the official word of an investigation to make any of that valid?