Answer:
C. Analyzing the chromosomes in the baby's cells
Step-by-step explanation:
Chromosomal abnormalities are the abnormalities which are inherited in the children. These abnormalities include either a part of the chromosome is missing or a chromosome is missing or exrta or it is switched to another chromosome. The genetic basis of these anomalies can be determined by analyzing the chromosomes in the cells of baby.
Hence the right option is C