By dissolving buried plants and parts
Ralph was a very good leader. He's charismatic and atheletic. He gives productive leadership and wise civilization.
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.
Connotation is a feeling that happens inside you when you see a word.