Pls help me with this question: Describe the main challenge Jonas Salk faced Here's the article link: https://sn56.scholastic. com/issues/2020-21/030121/history-m akers-jonas-salk. html

The pizza delivery boy was neither early nor late he was right on time. question 12 options: (a)correct as it is (b)the pizza delivery boy was neither early nor late, he was right on time. (c)the pizza delivery boy was neither early nor late; and he was right on time. (d)the pizza delivery boy was neither early nor late: he was right on time.

In poem daffodils-how do we know that the yellow daffodils has a long lasting effect on the speaker.

Select the correct answer. read this excerpt from "the lady of shalott" by alfred, lord tennyson. how is the isolation of the lady emphasized through the poem's settings? on either side the river lie long fields of barley and of rye, that clothe the wold and meet the sky and thro' the field the road runs by to many-towerd camelot and up and down the people go. gazing where the lilies blow round an island there below. the island of shalott a. she lives in a building that is not known to anyone b. while she lives in camelot, she cannot leave her tower c. the town has fields and roads, but she lives in a secluded tower d. she lives in a place that is far away from the road to camelot e. she is surrounded by gray stone walls in the tower reset next 2019 edmentum all rights reserved unit 4 activity-ec. docx a n ittarit