How did Katherine contribute to John Glenn's mission into space? help me and do not say hi until you answer my question

a She programmed the computer that calculated the path Glenn's spacecraft had to take.

b She helped accurately predict where Glenn's spaceship would land after orbiting Earth.

c She computed the path that Glenn's spacecraft would take on its way to the moon and back.

d She developed a new type of math to determine the speed of Glenn's spacecraft in zero gravity.

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.

Read the excerpt from poe’s "the fall of the house of usher." his ordinary occupations were neglected or forgotten. he roamed from chamber to chamber with hurried, unequal, an 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. which statement best describes the effect of the narration on the story? the narration reveals usher’s feelings of discouragement. the narration reveals usher’s absent-mindedness after his loss. the narration suggests usher’s confusion in the wake of his loss. the narration suggests usher’s mental decline after his sister’s death.

How does the motif in this passage connect to the central idea? read the excerpt from act 5, scene 1, of julius caesar octavius come come, the cause. if arguing make us sweat the proof of it will turn to redder drops look, i draw a sword against conspirators when think you that the sword goes up again? never, till caesar's three and thirty wounds be well avenged, or till another caesar have added slaughter to the sword of traitors the blood motif suggests that revenge will lead to violence and death the omens motif suggests that octavius will die avenging caesar's death the sword motif suggests that all leaders are eventually assassinated the flattery motif suggests that the conspirators will eventually turn on one another