The correct answer is Ohm-meter (option B). Specific resistance, or resistivity, is a fundamental property of materials that quantifies their ability to resist the flow of electric current. It is expressed in ohm-meters (Ω·m) in the International System of Units (SI). Resistivity is intrinsic to each material and depends on factors such as its composition and temperature. Materials with high resistivity, such as insulators, impede the flow of current more effectively than materials with low resistivity, such as metals. The ohm-meter unit signifies the resistance across a unit length of material with a unit cross-sectional area, providing a standardized measure for comparing and designing electrical conductors, semiconductors, and insulators. Understanding resistivity is crucial for selecting appropriate materials in electrical and electronic applications to ensure efficient and reliable performance while minimizing energy losses and heat generation.