A and D.
A documentary about artifacts, and photos and videos from the archaeologists themselves would be most helpful in the pursuit of more information for Craig. The reason these two sources would be most helpful is because they come with descriptions from the people who actually found the artifacts. This will help Craig understand the pieces better, instead of just seeing them with no explanation.
Pitch is the main aspect of vocal delivery which involves how high or low your voice is, along with the rise and fall of your voice.
What is pitch?
Pitch is a perceptual attribute of sounds that allows them to be ordered on a frequency-related scale, or more colloquially, pitch is the quality that allows humans to perceive sounds as "higher" and "lower" in the sense associated with musical melodies.
Pitch, along with length, loudness, and timbre, is an important auditory property of musical tones. Pitch may be defined as a frequency, but it is not a strictly objective physical feature; it is a subjective psychoacoustical quality of sound.
Historically, the study of pitch and pitch perception has been a fundamental subject in psychoacoustics, and it has been crucial in developing and testing hypotheses of sound encoding, processing, and perception in the auditory system.
Learn more about pitch
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No i pretty sure its regionalism