Which excerpt from nathaniel hawthorne’s "dr. heidegger's experiment" best reveals the allegorical nature of this short story? select all that apply
a. a strange chillness, whether of the body or spirit they could not tell, was creeping gradually over them all.

b. they gazed at one another, and fancied that each fleeting moment snatched away a charm, and left a deepening furrow where none had been before.

c. the water of youth possessed merely a virtue more transient than that of wine.

d. "yes, friends, ye are old again," said dr. heidegger, "and lo! the water of youth is all lavished on the ground.

e. well, i bemoan it not; for if the fountain gushed at my very doorstep, i would not stoop to bathe my lips in it; no, though its delirium were for years instead of moments. such is the lesson ye have taught me! "

f. but the doctor's four friends had taught no such lesson to themselves.

g. they resolved forthwith to make a pilgrimage to florida, and quaff at morning, noon, and night, from the fountain of youth.

Read sentence 13 from the draft. some plants retain a great deal of their foliage through much of the spring and summer, but the leaves do not retain their green color for long. which detail would be best to add after sentence 13 to develop the topic? a. since the green color of the leaves that are bright and abundant during the warmer months will disappear by the time it is fall, it is important that the leaves are trimmed and kept freshly cut so that they will last for as long as possible. b. while the temperature outside may dictate when the fall colors of leaves appear, it is only one of many environmental factors that play a part in the changing of colors from green leaves to fall-colored leaves during the cooler months. c. if people want to enjoy the green color of leaves longer, trees should be planted where the environment is warmer and the days longer because chlorophyll in the leaves can only be manufactured and replaced with sunlight and warmth. d. the green chlorophyll normally masks the fall-colored pigments during the warmer months, but as sunlight becomes less abundant and trees become frozen, the fall colors of leaves become more visible as chlorophyll disappears.