When are First Amendment rights not guaranteed? A. When journalists act in a controversial manner B. When journalists tell people the truth C. When journalists publish negative information about others D. When journalists threaten national security

D

Explanation:

The first Amendment right as we know allows anyone to speak thier mind it However in the case that national security is threaten by a potential information leak then any form of enforcment  can be used to block this information  

your word would be isle.

isle is an island or peninsula especially a small one.

if you add the letter "a" you get aisle, which is a passage between 2 rows of something like chairs, shelves, or something else.