Answer: I believe it should be the last option
A is used for words that begin with a consonant sound;
an is used for words that begin with a vowel sound:
What a/an exciting summer it has been for Jalia.
"exciting" is the word right after a/an, and it starts with a vowel sound (short vowel e) and is a vowel.
The answer is an => What an exciting summer it has been for Jalia.
Unspoken is like things you picked up on without being told and articulated is things you were told, like if your mom said don’t burp it’s up lady like
Some people have an easier time establishing and maintaining friendships than others.