A nurse is talking with a client who is at 21 weeks of gestation and is scheduled for an international flight. Which of the following instructions should the nurse include? (Select all that apply.)

Avoid sitting for long periods of time during the flight to prevent swelling and discomfort.

Wear compression stockings during the flight to prevent blood clots.

Avoid using seat belts during the flight to prevent pressure on the abdomen.

Take frequent walks and do leg exercises during the flight to promote circulation.

Avoid using electronic devices during the flight to reduce radiation exposure. Take a high dose of vitamin C before the flight to boost the immune system.