Answer:
A. aneuploidy; trisomic
Explanation:
Aneuploidy means having more numbers of chromosomes than usual while polyploidy means having an abnormal number of chromosome sets. Down syndrome is a trisomy on chromosome 21 meaning there are 3 chromosomes for chromosome set 21.
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<span><u>B. setting a clear goal for the future </u></span>
Water is a key element and necessary thing life needs in order to live and thrive without water everything would die.
