Answer:
O And.
Explanation:
Transition words are those words that act as the "glue" to connect ideas in a sentence or indicate the words or phrases that are connected for a better understanding of the readers. They are words such as "and", "again", "so" "but" etc.
In the given passage, there are several transition words used. But the one transition word that is used to indicate that additional information is being added is the use of the word "and".
Thus, the correct answer is "and".
I think the answer is D .instututed means established
