The correct answer is 1.
An electromagnet is type of magnet in which a magnetic field is produced by an electric current.
However, the magnetic field disappears when the current is turned off. Therefore, it does not function without a source of current.
Answer: A. Research work, essay or presentation are the specific part of a subject in a narrow sense is a description of the studies undertaken to summarize the available information, to conduct experiments and experiments, to establish the regularities deriving from the collected data.
I see what you are trying to ask, but a piece of writing can contain more than one organizational structure.
B adjective phrase is the correct answer
