Categorize the following relationships into generalization, aggregation, or association. Beware, there may be n-ary associations in the list, so do not assume every relationship involving three or more classes is a generalization.
A. A country has a capital city. B. A dining philosopher uses a fork. C. A file is an ordinary file or a directory file. D. Files contain records. E. A polygon is composed of an ordered set of points. F. A drawing object is text, a geometrical object, or a group.
G. A person uses a computer language on a project. H. Modems and keyboards are input/output devices. I. Classes may have several attributes. J. A person plays for a team in a certain year. K. A route connects two cities. L. A student takes a course from a professor.

Answer explained below

Explanation:

a. A country has a capital city. aggregation(city is part of country)

b. A dining philosopher uses a fork. association(philosopher and fork are different entities)

c. A file is an ordinary file or a directory file. generalization( both ordinary and directory files are having attributes of files)

d. Files contain records. aggregation( records are part of File)

e. A polygon is composed of an ordered set of points. aggregation( points are parts of polygon)

f. A drawing object is text, a geometrical object, or a group. generalization( text and geometrical objects are drawing object)

g. A person uses a computer language on a project. aggregation( person and computer language are part of project)

h. Modems and keyboards are input/output devices. aggregation( Modems and keyboards both are I/O devices)

i. Classes may have several attributes. aggregation( attributes are part of classes)

j. A person plays for a team in a certain year. aggregation(player is part of team)

k. A route connects two cities. aggregation( route consists of two cities)

l. A student takes a course from a professor. association( student and course are separate entities)