Question

multiple-choice question curiosity about something leads to possible lines of ? that the person/scientist can test. investigations data variables

Explanation:

To solve this, we analyze the context: curiosity drives a scientist to explore, and "lines of investigations" makes sense as investigations are what scientists test. "Data" is collected during testing, and "variables" are part of experiments, not what curiosity leads to as testable lines. So "investigations" fits.

Answer:

A. investigations