Answer:
3). Independent commissions significantly reduce the influence of partisan gerrymandering in the redistricting process.
Explanation:
As per the question, option 3 displays the advantage of independent commissions as it clearly portrays that 'independent commissions considerably reduce the effect of partisan gerrymandering in the redistricting process'. The primary reason for the advocates moving for the drawing task of U.S. House districts to independent commissions from the state legislatures is that the former helps in lowering the influence of 'achieving a result by manipulating the boundaries of a particular constituency'(gerrymandering) in the process of redistricting. Therefore, option 3 is the correct answer.