Which sentence does not contain any punctuation errors?

a.
the gettysburg address begins like this—“four score and seven years ago our fathers brought forth on this continent a new nation, conceived in liberty, and dedicated to the proposition that all men are created equal.”

b.
the gettysburg address begins like this; “four score and seven years ago our fathers brought forth on this continent a new nation, conceived in liberty, and dedicated to the proposition that all men are created equal.”

c.
the gettysburg address begins like this “four score and seven years ago our fathers brought forth on this continent a new nation, conceived in liberty, and dedicated to the proposition that all men are created equal.”

d.
the gettysburg address begins like this: “four score and seven years ago our fathers brought forth on this continent a new nation, conceived in liberty, and dedicated to the proposition that all men are created equal.”

The correct answer is D. The Gettysburg Address begins like this: “Four score and seven years ago our fathers brought forth on this continent a new nation, conceived in liberty, and dedicated to the proposition that all men are created equal.”

A colon is used to introduce an idea from a direct quote.

You forgot to say that this question is about "Students’ Work Ethic Affected by Peer Groups, Desire to Be Popular "by Shankar Vedantam.

A. Student should be giving choices and how to respond in class

Explanation:

The article shows how the relationship with peers can affect students' academic performance. That's because when students establish friendship with people who don't care about academic success, those students are afraid of being seen as a "nerd" and can adopt behaviors that don't help them to be an exemplary student.

On the other hand, students who make friends with people who care about academic success, are afraid that their peers will see him as a "loser" and try harder to be exemplary students.

This all happens due to the concern of these students with the popularity that they have within their groups. For this reason, it is important that teachers give options for students to answer academic questions, without having to expose themselves (raise your hand, or have to answer questions out loud, for example). That way they will feel more comfortable in answering academic questions in classrooms without peer pressure.