The feature of the constitution that requires each of the three branches of government to be relatively independent of control over the others and that requires each branch to share powers with at least one of the other branches is the doctrine of

Separation of power.

Explanation:

The separation of powers is referred to as a model that is required for governance of a institution/state. Under this generic model, an institution's power is divided into groups or branches, with each having independent and separate powers and also different responsibility, therefore the powers of one group or branch is not in conflict with others and the control associated with them.

the fourth amendment protects:

"the right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no warrants shall issue, but upon probable cause, supported by oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized."  

so this would mean the denial to search and seizure without warrant or permission.

the answer might be either a or c. can't be too sure , because i searched the web, but no valid answers came through.