The correct answer for 1 is Ninth Amendment.
It was a part of the Bill of Rights and established that there are many rights that people have but that are not enumerated in the constitution verbally. This was included to prevent government from preventing people from establishing their rights based on technicalities or exploiting the constitution
The correct answer for 2 is Unnumerated
Unnumerated basically means haven't been mentioned in the constitution under a certain number or a certain section. There are many these unnumerated rights that people have and the list increases or decreases as times change.
The correct answer for 3 should be government infringement
This is done in order to to argue that the right to privacy is not specifically numerated in the constitution but nevertheless exists and it is known what constitutes it. That's why the police can't enter your house without warrants and similar things.