The correct answer is: C. Compound
A compound is a substance that is made up of two or more elements that are chemically combined. The elements in a compound are held together by chemical bonds, which are forces that hold atoms together. The properties of a compound are different from the properties of the elements that make it up.
A semiconductor is a material that has electrical conductivity between that of a conductor and an insulator. Semiconductors are used in many electronic devices, such as computers, cell phones, and solar panels.
A superconductor is a material that has zero electrical resistance and expels all magnetic fields. Superconductors are used in many applications, such as MRI machines and particle accelerators.
An insulator is a material that does not conduct electricity. Insulators are used to protect people from electrical shock and to keep heat in or out of objects.
In conclusion, a substance whose molecules consist of dissimilar atoms is called a compound.