PLEASE HELP ME ASAP Why is prerequisite knowledge important to high school students?

It helps you remember what you learned before.
It makes basic knowledge easier to learn.
It prepares you to learn at increasingly complex levels.
It helps you identify the behaviors new assignments require.

The diagin dilutepage 6 of 12a6a5(a)fluorine, chlorine, bromine and iodine are placed in the same group of theperiodic table.state the common name used to describe elements in this group.(i)state the group in which the elements are placed and explain whythey are placed in that group.(ii)which of the above named elements is a solid at roomtemperature and pressure?