Which prohibited personnel practice address improper hiring practices based on agency officials knowingly giving preference to one prospect over another?

The prohibited personnel practice that addresses improper hiring practices where agency officials give preference to one prospect over another is known as "favoritism" or "nepotism." Specifically, it falls under 5 U.S.C. § 2302(b)(6), which prohibits any action that discriminates against individuals in hiring or promotion based on personal relationships rather than merit. This practice undermines fairness and equal opportunity in the federal hiring process.