Studying for ACT English and SAT Writing Language

No commas for prepositional phrases
What does this mean?
When you see words like
in
on
for
by
from
to
with
around
of
Don’t use commas for them.
Examples from the test C02. These sentences have no commas.
The team that prevails in two of the three periods wins the game.
Sweet Auburn’s designation in 1976 as a National Historic Landmark was noteworthy.

Additional sentences with no commas
The store in the back of the mall on the second floor in Paramus sells many items like phones, computers, and tablets.