How does the author structure the information in the section “Prepare for Liftoff”? A : By explaining the causes and effects of events
B: By presenting the events in chronological order
C: By comparing and contrasting the events
D: By using problem and solution to explain the events

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I believe that it's D (but maybe A)

Explanation:

Please remember I could be wrong, however, what made me think it's A was:

In 2016, Browning set out to build a sleek suit that would allow a human to fly. He knew his suit would need to produce an upward force stronger than the force of gravity pulling him to Earth. - Cause

Browning started by collecting several jet engines. - Effect

However, it isn't that great of an answer, for one it isn't really a cause nor an effect, for one it's talking about how he wanted to make something, but he needed something else to make it work, later making the problem have a solution by. But, the reason why I think it's mainly D is because:

He KNEW his suit would need to produce an upward force stronger than the force of gravity pulling him to Earth. - Problem

He started by collecting several jet engines ~ these devices can blow out air, creating a pushing force called thrust, testing the engines, later helping and creating an upward force called 'lift'. - Solution

1. state-issued photo ids. provide them for free for those who can't afford them.

2. the system we have seems to be working nearly perfectly. seems like about 31 cases per billion votes cast

3. the national policy for hiring new employees which requires proof of eligibility to work. there are something like 20 types of identification which can be used for this.