Final answer:
Nearsightedness may have genetic components, but if both parents are farsighted and the child is nearsighted, the child's condition is not necessarily a direct inheritance of farsightedness. Nearsightedness focuses light in front of the retina, whereas farsightedness focuses light beyond the retina.
Step-by-step explanation:
If both Peggy and Bob are farsighted and their child is nearsighted, then the following statement is true: 'Nearsightedness may be inherited from parents, despite them being farsighted.'
Nearsightedness, or myopia, commonly manifests during school-age years and can be influenced by genetics and environmental factors such as extensive close visual work. Individuals with one or both parents requiring glasses have an increased chance of needing vision correction themselves.
The focal point in nearsighted individuals is in front of the retina, whereas for farsighted individuals, it is beyond the retina. This understanding helps us identify that the presence of nearsightedness in the child does not necessarily mean it was directly inherited from the farsighted parents, but rather suggests a complex interplay of genetic and environmental factors. Thus, the correct answer to the initial question is: (B) The child's vision is unaffected by the parents' conditions.