Can someone check my answer? i think its b.
read the passage.

excerpt from "marie curie and the discovery of radioactivity" by mara rockliff

the energy appeared to come from inside the metal itself, deep down at the level of its atoms. marie curie named this atomic energy radioactivity. a substance that emitted this energy was called radioactive.

her experiments yielded a second surprise. a sample of uranium-rich pitchblende turned out to be three or four times as radioactive as pure uranium. how could this be? marie had already tested every known element of pitchblende. none was radioactive. but something in that pitchblende, something besides the uranium, was sending out rays.

it could be inferred that the word emitted in the first paragraph means "released."

which context clue best confirm this meaning of the word emitted?
a. "three or four times as radioactive"

b. "sending out rays"

c. "deep down at the level of its atoms"

d. "turned out to be"

What does the term fiend not mean as it is used in the passage? a) beast b) brute c) fanatic d) savage

Use morphology and syntax to make grammatical sense of the following sentence (mark all that the ova of all mammals except the monotremes undergo holoblastic segmentation. the -s inflection indicates that monotremes is a plural noun. the suffix -ic indicates that holoblastic is an adjective. the suffix -ation in the word segmentation is a noun-forming suffix denoting a process. the -s inflection indicates that monotremes is a possessive noun.

Part a which statement best describes a central idea in this narrative? in times of tragedy, it is difficult to determine how best to be of service. in times of crisis, people prefer to be alone. young people tend to look to older people to take action in times of tragedy. when people publicly commit to being of service, they are more likely to follow through. part b which detail from the text best to shape the central idea in part a? "'i thought you might have too much going on already. i saw everyone post online.' martin said, 'i don’t think anyone wanted to be in the way today, so i’m glad you came.'" "finally, he said, 'i don’t know what to do. i guess i should tell him to let me know if he needs anything, but that doesn’t feel like enough.'" "he wondered how many people would actually show up to out and how many would simply hope that enough others did." "he explained to her that martin’s mom had died, and told her how he felt about his friend’s loss. 'what do you plan to do for him? ' his mother asked."