According to the FSB notes on page 4, what does the Hebrew word Tehom (translated the deep) refer to?

Answer the following questions based upon the listed readings from the Faith Study Bible (FSB). The readings are attached above as a PDF, since the Faith Study Bible is now out of print, and the link listed in the syllabus does not seem to work. Include the questions before your answers in the assignment.
According to the FSB notes on page 4, what are the two possible interpretations of the Hebrew word bereshith (translated, In the beginning)?