As Greek city-states grew, political changes occurred, such as
Ο
Α
A. nobles seized power from farmers
O
B. tyrants rose to rule many city-states
O
C. nobles seized power from the merchants
O
D. farmers seized power from the merchants

a. "to practice" is the best phrase to complete the sentence.

explanation:

during the summer, she likes to practice her soccer skills so that she is ready to play in the fall.

(note that : all the other options "the practicing of", "practice for" and "to do a practice on" are inappropriate as they make the sentence grammatically incorrect.)

a. they have shared matter.