The correct answers are:
Many forms of energy can be easily converted into electricity.
Electricity can be easily transformed into other forms of energy.
Electricity flows well through nearly all materials.
Electricity can be carried efficiently across long distances.
These are all reasons why electricity is useful. The ability to convert many forms of energy into electricity means that it can be used to power a wide range of devices and systems. Similarly, the ease with which electricity can be transformed into other forms of energy, such as heat or motion, means that it can be used for a variety of purposes. Electricity's ability to flow well through many materials and its efficiency in being carried across long distances makes it a highly practical means of transmitting energy from one place to another