Final answer:
The precautions regarding cannulation and temperature in pregnant patients are to avoid cannulation if possible and monitor temperature regularly.
Step-by-step explanation:
The correct answer is option 1) Avoid cannulation and monitor temperature regularly. When it comes to cannulation and temperature in pregnant patients, it is important to err on the side of caution. Cannulation should be avoided if possible to minimize the risk of infection and other complications. However, if cannulation is necessary, it should be performed with utmost care and closely monitored. Temperature should be regularly checked to detect any signs of infection or other abnormalities.