What is the production possibilities frontier?
a) the points on a production possibilities graph that show an underutilization of resources
b) the points on a production possibilities graph that show the total revenue of an economy
c) the line on a production possibilities graph that shows the maximum possible output
d) the line on a production possibilities graph that shows how production increases as new technologies are introduced

Which one of these lines use him to permitte which one of these lines uses iambic pentameter?

Read the following passage: he roamed from chamber to chamber with hurried, unequal, and objectless step. the pallor of his countenance had assumed, if possible, a more ghastly hue— but the luminousness of his eye had utterly gone out. the once occasional huskiness of his tone was heard no more; and a tremulous quaver, as if of extreme terror, habitually characterized his utterance. there were times, indeed, when i thought his unceasingly agitated mind was laboring with some oppressive secret, to divulge which he struggled for the necessary courage. which of the above ideas might be considered foreshadowing? he is wandering all over the chamber his skin tone is really pale his voice is quivering the narrator thinks he is laboring with an oppressive secret

What tone does this passage convey? sara thought about her options and sighed. she figured nothing could make her situation better. angry satirical humorous pessimistic