A male client has been diagnosed as having a low sperm count during infertility studies. After instructions by the nurse about some causes of low sperm counts, the nurse determines that the client...

A male client has been diagnosed as having a low sperm count during infertility studies. After instructions by the nurse about some causes of low sperm counts, the nurse determines that the client needs further instructions when he says low sperm counts may be caused by which of the following?

1. Varicocele.

2. Frequent use of saunas.

3. Endocrine imbalances.

4. Decreased body temperature.