Utilitarians believe in:.
a handful of absolute moral rules.
only one absolute moral rule:
the principle of utility.
breaking conventional moral rules whenever it's in one's self-interest.
no moral rules whatsoever.

only one absolute moral rule:

the principle of utility

Explanation:

The principle of utility holds that actions or behaviors are morally right or wrong depending on if they promote happiness or pleasure.

They opine that an action is wrong if it brings displeasure and unhappiness and are against absolute moral codes that classify specific actions or behaviors as right or wrong. Utilitarians therefore believe that pain or pleasure can be objectively measured and quantified.

whitch constitution would be inadequate as a basis for government today?

the answer would be a) it only allowed catholics to be in government.

answer; legislature;