You recognize that a child is choking and ask if you can . the child nods frantically. you send someone to call 911 and stand behind the victim. what is your next action?

a. give back slaps

b. give abdominal thrusts

c. give chest thrusts

d. lay the child down

Option B, give abdominal thrusts

Explanation:

When somebody is choking and having a difficulty in breathing, the first thing is to look for help around you. If there is no one, instead of waiting it is better to rescue the person for one minute and then call on emergency response number 911.  

Till the rescue helps arrive, it is better to provide abdominal thrust to the suffering person. In order to do so, one must firmly stand behind the patient and wrap arms under the arms and in front of the abdomen of the patient. Now make a fist and give quick upward thrust to the patient. Continue this till the choking object comes out.

Hence, option B is correct

a- all cells come from pre-existing cells