Question

question 3
what are used to further clarify and emphasize specific types of linkages or the nature of interactions among the entities diagrammed?
lines and arrows
north arrows and site plans
elevations and keys
legends and floor plans

Explanation:

Lines and arrows are commonly used in diagrams to show relationships and interactions. North arrows relate to orientation, elevations to height views, legends to symbols (but not for interactions as directly as lines/arrows), and floor plans to layout.

Answer:

lines and arrows