The twins which are fused with each other wholly or in part called as
Siamese twins
The correct option is A
Explanation of the correct option :
Explanation of the incorrect option:
Option B:
These types of twins occur when two fertilized eggs are implanted in the uterine wall at the same time that is when the mother releases two eggs and both become fertilized by two different sperms.
Option C: identical twins
These types of twins occur when a single egg is fertilized by a single sperm to form one zygote, but the zygote divides into two separate embryos
Final answer: The twins which are fused with each other wholly or in part called as Siamese twins.