Why do we need advisory

bc advisory is a regularly scheduled period of time, typically during the school day, when teachers meet with small groups of students for the purpose of advising them on academic, social, or future-planning issues.

Explanation:

This advice provides a third party perspective — an important point of view that combats emotional decision making.

option c (nickel) is not found in earth's crust. the earth's crust basically contains eight (8) elements namely: oxygen, silicon, aluminum, iron, calcium, sodium, potassium and magnesium (listed in order of abundance).