grandh01 wrote:As a result of medical advances, many people that might at one time have died as
children of such infections as diphtheria, pneumonia, or rheumatic fever now live well
into old age.
(A) that might at one time have died as children - that cannot be used for people
(B) who might once have died in childhood - concise and makes sense, this is the answer
(C) that as children might once have died - wrong use of that for people
(D) who in childhood might have at one time died - awkward and wordy
(E) who, when they were children, might at one time have died - wrong use of when just after who

OA IS B