Ovum: The unfertilized egg cell (B) as shown in the diagram.
Morula: A solid ball of cells (D) resulting from the early cleavage stages postfertilization.
Blastocyst: A hollow structure (G) formed in the early development of mammals, which implants in the uterine wall.
Observe the schematic representation of assisted reproductive technology given below:
Identify the most appropriate technique depicted in the above diagram.