Concept:
The PCPNDT (Pre-Conception and Pre-Natal Diagnostic Techniques) Act was enacted to prevent sex selection and female foeticide.
Major provisions of the Act include:
• Regulation and registration of ultrasound/sonography centers
• Written consent of pregnant women before diagnostic procedures
• Prohibition of disclosure of fetal sex
• Prevention of misuse of prenatal diagnostic techniques
Step 1: Analyze statement A.
School education of children is not a guideline under the PCPNDT Act.
Hence, A is incorrect.
Step 2: Analyze statement B.
Registration of sonography and ultrasound machines is mandatory under the Act.
Hence, B is correct.
Step 3: Analyze statement C.
Written consent of the pregnant woman is required before conducting prenatal diagnostic procedures.
Hence, C is correct.
Step 4: Analyze statement D.
The Act prohibits communication of the sex of the fetus to prevent female foeticide.
Hence, D is correct.
Step 5: Select the correct option.
The correct combination is:
\[
B,\; C,\; D \text{ only}
\]
Therefore, the correct answer is:
\[
\boxed{(B)\ B, C, D\ \text{only}}
\]