The correct answer to this question is reliable which is the adjective. An adjective is a descriptive word used to describe objects, nouns, people and things.
I bought a car from a reliable salesperson.
Reliable is the adjective because it is describing the salesperson in this sentence.
Queen. Since that's the title of the person, it needs to be capitalized (the same principle applies to other titles: Doctor, Judge, President, etc.)
I think it would be ‘problem and solution’ but i haven’t read the article because it isn’t linked. however ‘problem and solution’ does sound like it would fit best :)
A. Radio announcers should be careful not to insert their opinions into the newscasts.