Identify the most appropriate technique depicted in the above diagram:
The diagram depicts Intracytoplasmic Sperm Injection (ICSI).
Sperm is directly injected into the egg's cytoplasm using a fine needle.
This method is used in cases of male infertility or low sperm count.

A ladder of fixed length \( h \) is to be placed along the wall such that it is free to move along the height of the wall.
Based upon the above information, answer the following questions:
(iii) (b) If the foot of the ladder, whose length is 5 m, is being pulled towards the wall such that the rate of decrease of distance \( y \) is \( 2 \, \text{m/s} \), then at what rate is the height on the wall \( x \) increasing when the foot of the ladder is 3 m away from the wall?