The Benefits of Birdhouses
Explanation: This is a good topic because they have an importance in the world today, they benefit birds.
I believe The answer is A.a class system
The correct pronoun is their.
Every contestant should wear their best suit on Tuesday.
Their is a personal pronoun that means belonging to or associated with the people or things previously mentioned or easily identified. Therefore the suits belongs to the contestants, there is more than one contestant, we don't know if they are male or female and 'it' refers to objects not people so the correct pronoun is their.
Old landmarks ,rivers ,paths , old trading area’s , villages
