Which of the following cannot be detected in developing foetus by amniocentesis techniques?

The correct option is B Jaundice
In amniocentesis, some of the amniotic fluid is extracted. It contains some foetal cells and dissolved substances that can be tested for:

• Genetic disorders like Down syndrome, Klinefelter syndrome, sickle cell anaemia, etc.
• Sex of the unborn foetus

Jaundice occurs when the liver does not work effectively which results in an increased amount of bilirubin in the bloodstream. This is a metabolic disorder and cannot be detected by amniocentesis.