Final Answer:
The contraceptive sponge increases a woman's risk for all of the following except Option 2: Pregnancy.
Step-by-step explanation:
The contraceptive sponge is a barrier method of contraception that is designed to prevent sperm from reaching the egg. It does not contain hormones like some other forms of birth control, such as oral contraceptives. Therefore, it does not affect a woman's hormonal balance or increase her risk of breast cancer (Option 1), as breast cancer is often linked to hormonal factors. The primary mechanism of the contraceptive sponge is physical barrier protection, making it highly effective in preventing pregnancy (Option 2).
Additionally, the contraceptive sponge does not provide protection against sexually transmitted infections (Option 3). Unlike condoms, which create a barrier that can reduce the risk of STIs, the contraceptive sponge solely focuses on preventing pregnancy.
Lastly, there is no evidence to suggest that the use of the contraceptive sponge increases the risk of ovarian cancer (Option 4). Ovarian cancer risks are more commonly associated with factors such as genetic predisposition and hormonal influences, which are not impacted by the use of the contraceptive sponge.
In conclusion, while the contraceptive sponge is effective in preventing pregnancy, it does not elevate the risks associated with breast cancer, sexually transmitted infections, or ovarian cancer.