Tonic receptors:.
A) slowly decrease the frequency of action potentials generated to a constant stimulus.
B) are quick to adapt to a particular stimulus intensity.
C) will always decrease to the point where no action potentials are generated.
D) are attune to changes in a parameter, not the extent of that change.

A) slowly decrease the frequency of action potentials generated to a constant stimulus.

Explanation:

Tonic receptors slowly decrease the frequency of action potentials generated to a constant stimulus. These receptors are also called sensory receptor as they continue to produce action potentials over the duration of the stimulus.  Some of the tonic receptors are permanently active.

muslims have taken his goods and products to different parts of asia an indonesia. sometimes just traveled and trade, but in other occasions, stayed in the place and made a living.

trade was the key for muslims economies to prosper. their commerce routes reached far places like malaysia and java in the 11th century.

another important factor for prosperity was that muslim states served as the middle point for european traders.

they used to travel by land but sailing the seas -the indian ocean- really increase the exportation of products.

answer; permissive;