Resistance of a material being scratched in known as brittleness density hardness softness

I think the correct answer from the choices listed above is the third option. Resistance of a material being scratched in known as hardness. It  is defined as the ability of a material to resist plastic deformation. Hope this answers the question. Have a nice day.

Correct answer choice is :

C) Hardness Explanation:

The electrical resistivity of a material is also recognized as its particular electrical resistance. It is a measure of how firmly a material reverses the flow of electric current. A determination of resistivity is the electrical impedance per unit length and per unit of cross-sectional area.

Where are the following

Bmust be the answer, as technically all organs move, so a is incorrect. all organs are made of different types of cells, so that isn’t a problem, so c is also incorrect. human hearts are very similar to many other animals’ hearts, so d is also incorrect, yet the heart is made of muscle, which is hard to grow in the lab so it would be correct to say b