Final answer:
The best pieces of evidence that Johnson was well-suited to a career in mathematics include his exceptional mathematical skills demonstrated from a young age and a family history of mathematical talent, suggesting that he had both the aptitude and potential for inherited mathematical ability.
Therefore, the correct answer is: option c). He demonstrated exceptional mathematical skills at a young age.
Step-by-step explanation:
To determine why Johnson was well-suited to a career in mathematics, we must look for evidence related to his aptitude and interest in the field.
The two pieces of evidence that best indicate Johnson's suitability for a career in mathematics are his demonstrated exceptional mathematical skills at a young age and possibly his family history that includes mathematical talent.
Profile cases such as Blaise Pascal, who developed a keen interest in geometry despite being initially forbidden to study mathematics, show that a strong curiosity and self-driven learning in mathematics at an early age are clear indicators of a natural inclination towards the subject.
In another example, Russell inherited mathematical talent from his family, akin to Johnson's likely inherited talents.
These examples illustrate that a combination of an inherent skill set, early demonstration of talent, and family background in mathematics are strong indicators of a person's suitability for a career in mathematics. We look for factors like these because they suggest a likely continuation of interest and ability into adult life.