Question

pill
birth control pills are ______ % effective.
how does a person use this method correctly?
what can make birth control pills less effective?
ring

Explanation:

For the first blank: Birth control pills are about 91% effective with typical use (and 99.7% with perfect use, but 91% is the common typical - use effectiveness rate taught in health - related education).

For "How does a person use this method correctly?": A person should take the birth control pill at the same time every day, follow the instructions on the pill pack (such as starting the new pack on time, not skipping pills, and using a backup method if a pill is missed).

For "What can make birth control pills less effective?": Missing pills (especially multiple pills in a row), taking certain medications (like some antibiotics, anti - seizure medications), having vomiting or diarrhea that affects absorption, and not taking the pill at the same time every day can make birth control pills less effective.

Answer:

• Birth control pills are \(\boldsymbol{91}\) \% effective (typical use, for perfect use it's 99.7\%).
• How to use correctly: Take the pill at the same time daily, follow pack instructions, use backup if a pill is missed.
• What reduces effectiveness: Missing pills, certain medications, vomiting/diarrhea, inconsistent timing.