Question

What does the suffix -ology mean?
an action or practice
a condition or state
a belief or branch of learning
a form of government

Answer 1

http://dictionary.cambridge.org/us/dictionary/british/ology_2

Answer 2

The suffix -logy means a branch of learning, or study of a particular subject. The suffix -nomy means a system of rules or laws, or body of knowledge of a particular subject. These two are often intertwined as you might expect. (Note that -ology and -onomy are alternate forms which include the connecting vowel -o-.)

Answer 3

thank you