Answer:
The anniversary of the day on which a person was born, typically treated as an occasion for celebration and the giving of gifts. A birthday is a day when a person celebrates the anniversary of his or her birth. The celebration of a birthday usually is thought to mark how old a person is, traditionally stopping when death occurs and only stating that if still alive, they would have been old
D) “m” as the two verbs beginning with m - “moan” and “murmuring”
you could also say that it’s “i” with immemorial and innumerable
They have more wisdom and life experience, which makes them credible.