Atwo year old child is on the same level as a ten year old child in terms of conflict resolution

That statement is false

on the 10 - 12 years old, a child could already clearly determine what they want and already develop enough communication skill to ask for it.

Meanwhile, a two years old still in the early phase of recognizing the world around them and can't clearly communicate what they want.

And just based on their capabilities, of course their problem solving and conflict resolution are also different

Conjunctival membrane;

The second choice is the answer