Lab quiz 12&13, no errata for 14, 15

Read the question, find the correct exercise on your lab notes, select the appropriate letter you entered, compare it to the possible answers and select the correct one.

Evaluation
Each of 10 quizzes within this assignment are graded based on your answers from 0 correct to 10 correct.  Zero correct carries no score, 10 correct is worth 10 points.
Rubric

• 10 points: 10 correct answers and on down to
• 0 Points: No correct answers or failed to take the exam before the due date.