Question

what type of scientific investigation is omar conducting?
an extensive research investigation
a descriptive investigation
a comparative investigation
a normal laboratory investigation
chart: columns: digital camera, traditional film camera; rows: how is the photo stored? (digital: in thousands of pixels; traditional: in varying intensities on film), can the photo be easily edited? (digital: yes; traditional: no), can the photo be easily copied? (digital: yes, with no loss of quality; traditional: yes, with loss of quality), will the photo quality decrease over time? (digital: no; traditional: yes)

Explanation:

A comparative investigation involves comparing two or more groups (here, Digital Camera and Traditional Film Camera) to identify differences and similarities. The table compares their photo storage, editability, copy ability, and quality over time, so Omar is conducting a comparative investigation. Other options: Extensive research is too broad, descriptive just describes one group, and laboratory investigation implies lab - based experiments (not shown here).

Answer:

C. a comparative investigation