The philosopher socrates was known for his instructional method of
a- preventing his students from studying immoral things
b- demanding strict obedience to the state
c- teaching his students to question everything around them
d- encouraging his students to see the truth through pleasure

Option C is the right answer.  

Explanation:

Socrates was a Greek philosopher who stimulated critical thinking of young minds. He insisted his students to ask probing questions continuously until a contradiction is expressed. This continuous questioning will enable the students to get into the core of what they study.  This is popularly known as Socratic Method and it requires large group of students discussing the topic.

By questioning and expecting the students to find answers for the questions help they delve deep into the subject matter rather than the teacher giving out the answers to students. This self-paced learning paves way for an individual to become scholarly.

8 - (2a + 7) = a + 40     distribute/multiply - into (2a + 7)

8 - 2a - 7 = a + 40

1 - 2a = a + 40       add 2a on both sides

1 = 3a + 40         subtract 40 on both sides

-39 = 3a       divide 3 on both sides

-13 = a

[proof]

8 - (2a + 7) = a + 40

8 - (2(-13) + 7) = -13 + 40

8 - (-26 + 7) = 27

8 - (-19) = 27

8 + 19 = 27

27 = 27

social contract theory, nearly as old as philosophy itself, is the view that persons' moral and/or political obligations are dependent upon a contract or agreement among them to form the society in which they liv