When we say essential appositive, this is the phrase that is considered as an important part of the sentence that describes the noun and cannot be omitted for this will change the thought of the sentence. Based on the given sentence above, the essential appositive would be "Famed Astronomer". The answer would be the first option.
If you look it up in the dictionary it’s Visible
Answer:
Dear Father,
I am deeply sorry to trouble you, but may I get your permission to go on an outing with a schoolmate. I understand if you say no, but it would deeply make me happy if you would allow me this small ounce of freedom. Thank you, dad,
Love, [Insert your name]
Explanation:
I know it's not B, because arrogance is basically like pride or self-absorption, so that's false.
Apprehension, or C, is also false. The meaning of apprehension is basically anxiety or tension, so that is also false.
D is also not correct because donor is someone who gives something away to another person. Though donor is usually associated with giving away organs to help other people, it can be other things.
But a recipient is someone who receives something, such as a "Best Student" award!
A is the correct answer! :)