Your answer would be B. He's talking about not being able to prove his age because he hasn't never seen a real record of his birth or anything else that would give him an idea of how old he is, so no real way to actually prove it.
A bright red rose is the salient feature of the Old World Monkey, the Mandrill.
Among the two sentences given, the first sentence used the modifier correctly in order to clearly describe the words it is intended. The sentence, "I saw the car, that had passed us, screech to a halt at the red light." The modifier in this sentence is the phrase, "that had passed us". This phrase describes the word "car".
