Question

multiple - choice question
field lines show us....
only the direction of the field (which way the force is pushing or pulling)
only the strength of the field (how strong the push/pull is)
both the direction and the strength of the field

Explanation:

Field lines are a visual representation in physics. The density of field lines indicates the strength of the field (closer lines mean stronger field), and the direction of the lines shows the direction of the force (e.g., in electric fields, lines go from positive to negative charges; in gravitational fields, they point towards the mass creating the field). So, field lines convey both aspects.

Answer:

C. BOTH the direction and the strength of the field.