The answer might be analyze
Answer:
well i think he is 10 years old
Explanation:
D, Was is the answer, a being verb is showing the state of being such as (am, is, are, was, were, be, being, been.
Demonstrating bravery huh? It doesn't seem too hard to explain. Say, for example your talking about a fictional story, right? Depending on what that said character does, depends on his/her bravery for he/she did. If you can implement something similar to that in whatever it was you had in mind, it might help.
I really hope this helps.