First of all we need to know that the external conflict means that the main character is fighting with external problems. Such as robot vs robot, robot vs man, etc.<span>An example of this is Romeo and Juliet. In
this play, the two title
characters fall deeply in love but are from feuding families. Their struggle to
be together is external, as it is between the two lovers and society's
pressures for them to hate one another. </span>
<span>It is in fact this struggle with their society that actually causes the
tragic deaths of both title characters.
(http://study.com/academy/lesson/what-is-external-conflict-in-literature-definition-types-examples.ht...)</span>
The answer is a, "Because they went to school."
This is because that statement does not give information on what happened due to them going to school. If you were to leave out "Because" surely it would stand alone as a sentence, given enough context.
Advances in technology may have increased our life spans but they also turned us into a civilization of hedonism which people are slaves to entertainment and self satisfaction, and this is true because its common for everyone, without internet people feel they will die, like for fact, research studies show that teenagers use their electronics so much as if it was their lifeline itself and people die without their music, like girls like to be on social media and all and boys like to play video games, without power, its the end of the world for them and this is true because people don't know how to be balanced.
A is correct. Quotation marks always enclose the sentence being spoken, and there should be a space to indicate a new speaker.