I would assume during the early stages of humans, we knew we lived in the Solar system, but we decide to use only since we thought we were the only people in the cosmos<span />
The answer is c. to your question
Indicates a state of reality.
Indicative verbs state what is going on at that moment, or what could very possibly happen.
e.g "I run through the forest".
In scenario 1, the character dyes her hair pink, which is considered to be in a way deviant. The people in the society around her shows examples of being against her decision, like when the teacher sends her to the office.