The judicial branch of the us government has the power to create laws -interpret laws -command military maneuvers -appoint the heads of federal agencies

The correct answer is: "interpret laws".

The US Constitution included since its enactment the principle of the division of powers, that fractionates the power of the state in three branches: legislative, executive and judiciary. A system of checks and balances needs to be established, so that each of the powers supervises the other two, in order to ensure that none of the branches gathers enough power as to overrule the others.

The judicial branch has the power of judicial review, which places the executive and legislative power under its surveillance, as part of the system of checks and balances.  A court with authority to exercise judicial review can abolish laws and goverment decision, if it considers that such actions from the legislative and executive powers respectively, are violating the Constitution.  

polling is a process and the outcome is not involved in the process itself.

the outcome, which is an unfavorable rating for a particular candidate is not affected by the mechanical process of polling.

it rather depends on the number of people voting in favor of the candidate.

this is an outcome of people's preferences.

he was able to speed up production of the processing of seeds