• Intracytoplasmic Sperm Injection (ICSI) is the most suitable technique for very low sperm count because a single sperm is directly injected into an egg to achieve fertilization in a laboratory setting (as part of In Vitro Fertilization, IVF). This bypasses any issues with the sperm's ability to reach or penetrate the egg on its own.

• Artificial Insemination (AI) (or Intrauterine Insemination, IUI) involves placing a concentrated amount of prepared sperm directly into the woman's uterus. This technique can be used for low sperm count, but it is less effective in cases of very low counts (typically below 5 million motile sperm) and may require multiple cycles. If the count is severely low, ICSI is the more effective option, but among the given options, Al is the intended answer in many educational contexts.