Explain.. i don't get it's the bonus question

antimatter is utterly ridiculous: the evil opposite of matter which annihilates it on contact, with spectacular explosions. did this stuff escape from a star trek episode, and do the anti-bosons have little evil beards and eye patches? the thing is, we've not only detected antimatter, but we can also now churn it out of particle accelerators and hold it in magnetic bottles for 15 minutes. labs can hold antimatter longer than i can hold a pint.

how many grams of anti-matter is necessary to hold magnetic bottles for 20 minutes?
a) 15
b) 100
c) infinity
d) -infinity

Which of the following statements is a claim of definition?

Question 1 of 5 2 points in "how to eat an ice-cream cone," what does the author compare a melting ice cream cone to? o a. a hand grenade b. a runaway train o c. a machine gun o d. an atomic bomb submit

Armed with invisible ink, a cipher system, and a passion to end the war and preserve the union, elizabeth van lew became butler's eyes and ears in the confederate capital city. truth be told, however, she became much more than that. she became a spymaster, the person responsible for running a network of agents, couriers, and safe houses that was very active during the war. in addition to the spying, elizabeth van lew continued to maintain her church hill home as a safe house and something of a local union spy headquarters. —the dark game, paul janeczko what is the central idea of this passage? van lew’s home was used as a safe house, which was critical to the confederacy. van lew had a passion to end the war and preserve the union. van lew was a spymaster, a leading force in the espionage activities for the union. van lew did not enjoy working for general butler.