I believe that the answer is D
The correct answer is C.
Excavation in archeology is the controlled exploration of what lies under the surface. It is usually carried out in an ordered way in gridded trenches with a shovel and trowel. It is often slow and tedious work which involves digging down a centimeter at a time, but can be back breaking and difficult toil, sometimes shoveling through meters of densely packed soil. Either way, the purpose is basically the same, to uncover and reveal the type of human activities that took place at particular site over time.
The phenomenon of logrolling occurs when two members of congress conflicts in their interests, however, support each other's bills. Furthermore, the principle is commonly used in the Congress and is named to a sport. It is also called "trading of favours" or "quid pro quo."
The Tea act
The quartering act
and The Declatory Act