The possessive form of the noun teacher indicates its relationship to

Possessive noun usually includes an apostrophe such as Nene's bear, plant's soil, earth's mass and a lot more. Therefore, the possessive noun in the new coat belonging to Sharon is Sharon's that is Sharon's new coat. Add 's to those singular or plural nouns that do not end in s however, add only an apostrophe to plural nouns that already ends in s. Moreover, possessive nouns can be personal pronouns too. Personal pronouns actually shows or displays ownership of something especially in a sentence plus it does not the 's form of the word. Possessive pronouns inlude we, mine, her, his, ours, theirs and a lot more. 

Ibelieve the answer is a

Ialways thought that he thought it wasn’t fair because he thinks that people should be able to experience things and think outside of the box, or see color and add brightness and happiness to their lives but idk.