P7: Use Prepositions Properly

P7: Use Prepositions Properly:  Use prepositions according to their meaning and for proper idiomatic phrases: https://academicguides.waldenu.edu/writingcenter/grammar/prepositions

See the online link, but here is a common problem:

“On” refers to the surface, while “in” refers to being inside something.

Tami was involved on a meeting when Frank arrived. – Incorrect

Tami was involved in a meeting when Frank arrived. – Correct

Stan stood in the observation deck overlooking the city. – Incorrect

Stan stood on the observation deck overlooking the city.  – Correct