Marc never does his homework. his mother begins reinforcing him with additional "screen time" whenever he simply sits at his desk after dinner. after a week, she reinforces him only when he opens his books and assignments. one week later, she reinforces him only when he completes at least a portion of his assigned homework. marc's mother is using: a. shapingb. secondary reinforcementc. higher order conditioningd. stimulus discrimination

A). Shaping.

Explanation:

As per the given description of Marc's behavior and his mother's attitude to amend his habits exemplify that his mother is employing 'shaping' as it would establish his behavior which was previously not performed. This concept was first defined by B.F. Skinner who was a leading psychologist advocating 'behaviorism'. 'Shaping' is quite commonly employed by teachers and mothers to inculcate or reinforce certain behavior in kids that would help them to perform better and reach nearer to their targets. Similarly, Marc's mother is reinforcing 'successive approximations' to instill a behavioral change in him and attain the desired goal(when Marc begins to do his homework regularly). Thus, option A is the correct answer.

1. read the following excerpt from franklin d. roosevelt's "fireside chat 19":

on the other side of the picture, we must learn also to know that guerilla warfare against the germans in, let us say serbia or norway, us; that a successful russian offensive against the germans us; and that british successes on land or sea in any part of the world strengthen our hands.

remember always that germany and italy, regardless of any formal declaration of war, consider themselves at war with the united states at this moment just as much as they consider themselves at war with britain or russia. and germany puts all the other republics of the americas into the same category of enemies. the people of our sister republics of this hemisphere can be honored by that fact.  

the true goal we seek is far above and beyond the ugly field of battle. when we resort to force, as now we must, we are determined that this force shall be directed toward ultimate good as well as against immediate evil. we americans are not destroyers — we are builders.

analyze the effectiveness of this excerpt. how does it function within the speech as a whole? how does the structure of the excerpt to convey the speech's purpose and key points? support your argument with evidence from the speech. (10 points)

- "despite the fact that portia lives in belmont and has many suitors, bassanio believes that he can win her heart. bassanio plans on overcoming his financial obstacles by borrowing money from antonio to travel to belmont. he then plans on marrying portia and becoming wealthy enough to pay off his debts."