An object's apparent motion depends on a. the object's size and characteristics. b. the observer's size and characteristics. c. the observer's frame of reference. d. the object's frame of reference.

the answer is

A.the object's size and characteristics

C

Explanation:

the observer's frame of reference

the arctic is a region of the planet, north of the arctic circle, and includes the arctic ocean, greenland, baffin island, other smaller northern islands, and the far northern parts of europe, russia (siberia), alaska and canada.