Please choose the correct ending to complete the given sentence: Health: [header] How to provide rescue breathing for an infant during first aid [title] Check the infant for responsiveness. [step] Determine if your baby is conscious and responsive. Try to get your baby's attention so that she makes eye contact with you.

Ending1: One of the best ways to check a baby for responsiveness is to tap or flick the bottom of her foot. The baby should flinch, kick, or move the foot as a response. Ending2: If your baby is not able to pull her head up and flat, she might not be conscious of life while you are doing the rescue breathing. Check the infant's vital signs before the rescue breathing to check for proper oxygen flow. Ending3: If she latches onto your arm and looks in your direction, she is safe and is showing no signs of injury. [title] Have your baby's hands accessible for assistance. Ending4: If she does not appear to be responsive, you may be able to place her hand in her mouth to stop her breath from getting trapped in her mouth. [substeps] Make sure that the infant is securely supported from behind by someone securely holding her head with one arm.

Answer format: ending1/ending2/ending3/ending4