Final answer:
Looking at an engineering plan and building a scale model exemplifies spatial intelligence.
Step-by-step explanation:
The ability to look at an engineering plan and quickly build a scale model demonstrates spatial intelligence. Spatial intelligence, which is one of Howard Gardner's Multiple Intelligences, involves the ability to visualize and manipulate objects in the mind.
Mikel's skill in visually interpreting the engineering plan and applying it to a physical model showcases his proficiency in spatial intelligence.