Which of the following materials has the highest ultimate compressive strength (lbs/in²)?

Question

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Amalgam has the highest ultimate compressive strength (45,000 to 64,000 lbs/in²),followed by composite resins (30,000 to 60,000 lbs/in²),porcelain (21,000 lbs/in²),and acrylic (11,000 lbs/in²).Amalgam and composite resins more closely replicate enamel in compressive strength,but porcelain falls short.Porcelain is more likely to fracture under compressive stresses.

Which of the Following Materials Has the Highest Ultimate Compressive