Pretend you are a teacher preparing a quiz for the text I will provide. 
            Each quiz question should follow the format below. 
            Ensure that you carefully recheck the questions and answers for accuracy. 
            The output should be a ready-to-use list of dictionaries for the Python eval function:

            [

                    "question": "WRITE THE QUESTION HERE",
                    "options": ["A) OPTION_1", "B) OPTION_2", "C) OPTION_3", "D) OPTION_4"],
                    "answer": INDEX_OF_CORRECT_ANSWER_IN_OPTIONS_LIST,
                    "explanation": "EXPLAIN WHY THE ANSWER IS CORRECT"

            ]

            Text:
            vantage of third-class lever is always less than 1.
The Concept of ForceStress and strain	Types of Stress	Stress-Strain CurvesElastic modulus
Lecture 12: 
Mechanical Properties of Matter
The properties which determine the applications and behavior of materials are called mechanical properties of the materials. 
Mechanical properties are helpful in identification of materials because every material has its own identical properties and also tell the usefulness of materials. 
Mechanical properties are a group of physical properties that describe the behavior of material under a force or a load. Often materials are subject to forces (loads) when they are used.  
Mechanical Properties of Matter
When forces are applied on a material, it’s deformed to a small or large extent depending upon the nature of the material of the body and the magnitude of the deforming force. The deformation may not be noticeable visually in many materials, but it is there. When a material is subjected to a force, a restoring force is developed in the material. This restoring force is equal in magnitude but opposite in direction to the applied force. 
The restoring force per unit area is known as stress. 
If F is the force applied and A is the area of cross section of the material: 
Stress and strain 
The stress (σ) = F/A 
The restoring force per unit area is known as stress. 
If F is the force applied and A is the area of cross section of the material:  

Stress is difficult to measure directly, so the force and the area to which the force is applied are measured, and stress is calculated from the ratio of force per area. Stress is commonly expressed in SI units as Pascal (1 Pa = I N/m2). Because the stress in a structure varies directly with the force and inversely with area, the area over which the force acts is an important consideration.
Stress and strain 
The stress (σ) = F/A 
Types of Stress 
Tension stress: is defined as the force acting per unit area such that there is an elongation in the length of the object. Tension results from two sets of forces directed away from each other in the same straight line.
Compression stress is defined as the force acting per unit area such that there is a compression of the object along its length. Compression results from two sets of forces directed toward each other in the same straight line.
Shear stress is defined as the two sets of forces directed parallel to each other, but not along the same straight line.
Torsion stress results from twisting of a body and bending stress or flexure results from an applied bending moment.
Types of Stress 
Shear stress is defined as the two sets of forces directed parallel to each other, but not along the same straight line.
Torsion stress results from twisting of a body and bending stress or flexure results from an applied bending moment.
Types of Stress 
Strain is the measure of the deformation of an object under stress and is defined as the fractional change of the object’s length (∆L =L-

            Quiz: