Answer: investigate

AnswerCrossword Clue
INVESTIGATEProbe
investigateMake inquiries as to the character, activities, or background of (someone)
investigateCarry out research or study into (a subject, typically one in a scientific or academic field) so as to discover facts or information
investigateCarry out a systematic or formal inquiry to discover and examine the facts of (an incident, allegation, etc.) so as to establish the truth
investigateMake a check to find out something
investigateto observe or study by close examination and systematic inquiry