When you first get into the swimming pool, the water feels rather cool, but after swimming for awhile, the water feels fine. A friend asks you how the water is, and you tell her the "water's great.". She jumps in and then accuses you of lying because the water is freezing. You really were not lying. It is just that you experienced:

a. sensory gating.
b. sensory adaptation.
c. sensory conflict.
d. selective attention.

b. sensory adaptation.                    

Explanation:

Sensory adaptation: In psychology, the term "sensory adaptation" is described as a phenomenon in which an individual experience sensitivity reduction towards a particular stimulus after getting continuous exposure to it i.e, it reduces an individual's awareness towards a continuous stimulus. However, because of sensory adaptation, an individual's resources and attention gets free and allows him or her to attend some other stimuli in the surrounding environment.

In the question above, the given statement signifies sensory adaptation.

the united states constitution is the supreme law of the united states. the constitution, originally comprising seven articles, delineates the national frame of government. its first three articles embody the doctrine of the separation of powers, whereby the federal government is divided into three branches: the legislative, consisting of the bicameral congress; the executive, consisting of the president; and the judicial, consisting of the supreme court and other federal courts. articles four, five and six embody concepts of federalism, describing the rights and responsibilities of state governments, the states in relationship to the federal government, and the shared process of constitutional amendment. article seven establishes the procedure subsequently used by the thirteen states to ratify it. it is regarded as the oldest written and codified national constitution in force.