I need help with a pre calc question

Which sentence uses an objective tone? we will plant the best garden of any school in the area. the new campus garden will surely be envied by other schools. a garden would provide numerous benefits to the students. you will probably agree that gardens have many benefits.

Ithink i know it but i want to be sure so can you me out ?

Need plz been trying to do it for a long time and still haven’t succeeded