A women with 47 chromosomes due to three copies of chromosome 21 is characterized by
The correct option is C Down syndrome
Turner syndrome affects girls/women which results when X-chromosome is missing partially or completely.
Triploidy is rare chromosomal abnormality where fetus have an extra set of chromosomes in their cells.
When there is an extra X-chromosome in females, it results in super femaleness.
Down syndrome occurs when an individual has a full or partial copy of chromosome 21.
Therefore, the correct answer is option C.