Observe the schematic representation of assisted reproductive technology given below:

Identify the most appropriate technique depicted in the above diagram.
Step 1: Understanding ICSI.
- The diagram represents Intracytoplasmic Sperm Injection (ICSI).
- In this technique, a single sperm is directly injected into the cytoplasm of an egg using a fine needle.
Step 2: Use of ICSI. - ICSI is used in cases of male infertility, such as low sperm count or motility.
If vector \( \mathbf{a} = 3 \hat{i} + 2 \hat{j} - \hat{k} \) \text{ and } \( \mathbf{b} = \hat{i} - \hat{j} + \hat{k} \), then which of the following is correct?