Curves in the below figure represent the relationship between tensile stress and tensile strain for five different materials. The "dot" on each curve indicates the yield point and the "cross"...

Extracted text: Curves in the below figure represent the relationship between tensile stress and tensile strain for five different materials. The "dot" on each curve indicates the yield point and the "cross" represents the rupture point. Fill in the blank spaces below with the correct number referring to a material. (5) Material has the highest elastic modulus. O a. 4 O b. 5 O C. O d. 2 e. 1