Aman with a blood type ab mates with a women with a blood type a and produced a kid with a blood type b

The wife is heterozygous for Type A (writen as AO or Ai when completing Punnett squares), meaning she carries one allele for A and one allele for O.  During fertilization, the offspring received a dominant allele for Type B blood from the father and a recessive allele for Type O blood from the mother.

that's all i luck!

the ems is the abbreviation for the emergency medical services. it is a service provided by a group of medical professionals specialised doctors and other healthcare staff.

any one can call 911 in case of any medical emergency and a group of health care professional will come and give the treatment required. every day the ems staff receive many phone call, which are related to different types of medical emergencies, out of which 25-28% are exclusively related to the respiratory issues.

so, the correct answer is 25-28%.