Question

Governments which have a regard to the common interest are constituted in accordance with strict principles of justice, and are therefore true forms; but those which regard only the interest of the rulers are all defective and perverted forms, for they are despotic.

–Politics,
Aristotle

In the excerpt, Aristotle states that governments that act in favor of the common interest are

unpopular.
ineffective.
just.
tyrannical.

Answer 1

just.

Aristotle explicitly links governments that regard the common interest with being "constituted in accordance with strict principles of justice," so they are described as just (true) forms, unlike those that serve only rulers' interests.