How can rescuers ensure that they are providing effective breaths when using a bag-mask device?

The correct answer for above statement is:

sometimes it is identified as Ambu bag or generically as a standard resuscitator or "self-inflating kit", is a hand-held tool generally practiced to give positive pressure oxygenating to victims who are not exhaling or not breathing satisfactorily.So by using it one can observe chest lift with the breath.

answer: september 2, 1945

explanation:

loris malaguzzi was the founder of reggio emilia’s educational philosophy and together with the comune and many local administrators he participated in the birth and building of reggio emilia’s network of municipal preschools (3-6) and infant-toddler centres (0-3).