1.
a set of words that is complete in itself, typically containing a subject and predicate, conveying a statement, question, exclamation, or command, and consisting of a main clause and sometimes one or more subordinate clauses.
Explanation:
The answer is simple there are 2 older sisters and 2 older brothers which mean your the fifth
Answer is fifth
I would say understatement.
Example: You fall down the stairs and break your leg.While the ambulance is on the way, your friends asks how much it hurts and instead of wanting to seem like a crybaby you downplay how much pain you're actually in. Which is an understatement.
The gardener is a clean, eager, and hard worker.