The president is proud that Dr. Salk's work is extending beyond the United States. Which of the following is not a step Dr. Salk has taken to assist foreign countries? (10 points)
a
Dr. Salk has assisted foreign countries by providing technical information.
b
Dr. Salk has helped foreign countries begin to produce the vaccine themselves.
c
Dr. Salk has offered foreign scientists the opportunity to tour his laboratory.
d
Dr. Salk has traveled and given the polio vaccine to children in foreign countries.
