The nurse is providing health education about contraceptive methods to a group of young adults. Which of the following statements is correct about the use of spermicidal agents? Spermicidal agents: 1....

The nurse is providing health education about contraceptive methods to a group of young adults. Which of the following statements is correct about the use of spermicidal agents? Spermicidal agents:

1. Are extremely effective in preventing pregnancy.

2. Have relatively low levels of effectiveness when used alone.

3. Are the main causes of HIV and pelvic inflammatory disease.

4. Can prevent ectopic pregnancy.