A)both a and R are true and R is the correct explanation for a
B)both a and R are true but R is not the correct explanation for a
C)a is true but r is false
D)a is false but r is true
E)both a and r is false

Dear Student,

Here is the solution for your asked query:-

1. B. Both A and B are true but R is not the correct explanation of A.  Sterilisation is a surgical method both good for males and females. 

Vasectomy and Tubectomy are surgical methods to control the population. They also known as sterilization methods. They do not affect the normal sexual life.

Vasectomy:It is a small surgical operation performed in males. It involves removal of a small portion of the sperm duct by surgical operation. The two cut ends are then tied with threads to prevent the sperms from coming out. 

Tubectomy: It is a surgical method performed in Females. It involves removal of a small portion of the fallopian tubes by surgical operation. The cut ends are then tied with threads to prevent the egg to enter the fallopian tube.
 

2. B. Both A and B are true but R is not the correct explanation of A. Amniocentesis is a technique or method of determining inherited or genetic diseases in developing foetus. In womb foetus is surrounded by fluid called  amniotic fluid on its all sides. A very small portion of this fluid is withdrawn from the abdomen of pregnant women with the help of thin needle and then, tested for various diseases like sickle cell anemia, enzymes deficiency etc.
 

Hope this information helps in clearing your doubt. If you have any more doubts just ask here on the forum and our experts will try to help you out as soon as possible.

Regards