Answer:
Given, given.
Explanation:
The choice that makes most sense is "given, given", because basically, the given graph shows all those congruences.
The graph exactly shows

So, the reason of those congruence is by given.
Now, if we analyse each choice, we have different properties like transitive property and reflexive property. From these properties, the reflexive one can be used but to demonstrate that both triangles formed inside share the same side MO, that would be used to demonstrate a congruence between triangles.