Identify the complete adjective clause and the word it modifies.
This course deals with facts that everyone should know.
The complete adjective clause in the sentence is "that everyone should know."
To identify the complete adjective clause in the sentence, we need to look for a group of words that describes or gives more information about a noun or pronoun. In this case, the adjective clause starts with the word "that" and ends with the word "know."
The word it modifies is "facts." The adjective clause, "that everyone should know," describes the type of facts being referred to.
I answered your first question; now it's your turn.
Remember that a clause must have a subject and a verb.