When conducting a survey, which of the following is a reason to use a random sample? Check all that apply.

▢ To make cause-and-effect connections

▢ To avoid bias

▢ To produce a sample that is representative of the population

▢ To systematically favor the correct choice over every other choice on each question

* Thesis Paragraph - In the old children's tale, Chicken Little thought the sky was falling. Is that tale coming true? Every day thousands of objects from space enter the earth's atmosphere objects put there by man himself that are now raining back down on him. Though there haven't been any huge catastrophes so far, the problem is getting worse each year, and it is only a matter of time. Due to the increasing risk of space debris falling back to earth in inhabited areas or damaging orbiting spacecraft, we, as a global community, need to define and adopt a comprehensive policy that eliminates existing space debris and prevents more in the future.

* Supporting paragraph #1 - Putting in place a global plan to control space debris may seem unnecessary to some since the chance of impact is very small, according to the Johnson Space Center, which gave an only 1 in 10,000 risk to humans. [Reference] However, these statistics don't reflect the increase in space debris each year nor the increasing number of maneuvers necessary to protect manned spacecraft like the International Space Station from debilitating and, thereby, possibly life-threatening collisions with space junk. This is borne out by NASA scientist Nicholas Johnson, who confirmed that ... [Give details and references.]

* Conclusion - Although the chance of humans being hit or satellites being damaged by space debris is small at this time and the cost of eliminating and preventing debris would be substantial, the space debris problem is only going to grow. Space debris will become a material threat at some point in the not-too-distant future. The best solution is to take it on now with a global plan.