Final answer:
The related to part of a nursing diagnosis describes the reason(s) why the client has the diagnosis.
Step-by-step explanation:
The statement, related to, and as manifested by are the three parts of an actual nursing diagnosis. The related to part of the nursing diagnosis describes the reason(s) why the client has the diagnosis.
For example, if the nursing diagnosis is 'Impaired Physical Mobility,' the related to part could be 'due to recent surgery.' This helps to identify the underlying cause or contributing factors to the nursing diagnosis.
Therefore, the statement is true, and option a) is the correct answer.