Question

i-ready
summarizing informational texts — instruction — level e
put on the hoods and
bravely entered the tunnel.
mask used by the u.s.
army during world war i.
it was a dangerous test of
the gas mask saved
the invention, but they saved two lives and recovered four
countless lives.
bodies before officials closed the site.

over the years, morgan patented many ideas that saved
lives or made life easier. one of these \bright\ ideas was
the electric traffic light. in those days, city streets were
with horses, carriages, bicycles, and
morgan, the first african american in
to buy an automobile, was driving his new car
he witnessed a terrible collision.
empty
lonely
crowded

Explanation:

The context describes busy city streets with horses, carriages, bicycles, and automobiles, which would be filled with traffic and people. The word "crowded" matches this description perfectly, while "empty" and "lonely" contradict the scene of multiple vehicles and a collision occurring.

Answer:

crowded