How does Khan’s comparison of learning to building a house contribute to the meaning of the text?

you didnt give us the text...

Explanation:

Sal Khan focuses on student's mastery on subject/topic.

Explanation:He compares learning to the building of a house which a building contractor commences. Having laid the foundation and made about 75% progress on the foundation laying, he proceeds to lay the floors. He lays the 1st, 2nd floors on a wet foundation and moves to lay the 3rd floor but at this time everything collapses.

The process truly matters.

A student who haven't mastered a text/topic and goes ahead to another class or topic may encounter a problem in the upper level. If a student scores 80% in a class, it shows that there is a 20% which he is yet to grasp and master.

It's very important students comprehend and master topics/texts before heading to the next stage. What is fixed is that they actually master the subject/topic/text.

uncanny would be like unlucky or disaster. you can look for more in the dictionary or if you have text book then turn to a. 17 but it's different with textbooks.

your answer would be: d) eye contact