Option C is correct. interscting lines postulate is a postulate since we do not need to prove further to check where it is true or not.
A postulate can be termed as a theorem that is true and does not require any proof to ascertain its veracity.
From the given option, angle bisector postulate, collinear lines postulate and planes postulate are not postulate since we need to prove each of the theorems to ascertain their veracity.
Based on the definition above, hence, it can be concluded that intersecting lines postulate is a postulate since we do not need to prove further to check where it is true or not.
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