School leaders are responsible for ensuring learning takes place within a safe, high-quality environment. In this context, what is most important for principals to know about the instructional core? Group of answer choices The instructional core concerns only students and teachers. The instructional core is the only area where principals should focus their leadership. Principals must support the instructional core while also managing core-adjacent and core-absent activities. Quality leadership depends on a principal's willingness to spend equal amounts of time managing instructional core, core-adjacent, and core-absent activities