Final answer:
The carbon concentration of ferrite in hypereutectoid steels is higher compared to hypoeutectoid steels.
Step-by-step explanation:
The carbon concentration of ferrite in hypoeutectoid and hypereutectoid steels is higher in hypereutectoid steels.
In hypoeutectoid steels, the carbon concentration is below the eutectoid composition. This means that there is excess ferrite (iron) in the steel, and as a result, the carbon concentration in ferrite is lower.
In hypereutectoid steels, the carbon concentration is above the eutectoid composition. This means that there is excess cementite (a compound of iron and carbon) in the steel, and as a result, the carbon concentration in ferrite is higher. Therefore, option c) is the correct answer.