Respuesta :
ANSWER – D (Change "the annals of this institution" to "our school's history")
Having read that excerpt from a speech meant for the general public, the phrase which needs to be revised in order to make the speech more appropriate for an audience of elementary students is "the annals of this institution"… elementary students will understand "our school's history" more easily.
(APEX) D. Change "the annals of this institution" to "our school's history"