Question

The friendly _____ looking puppy pawed on the window to attract the attention of the people walking by on the sidewalk. [l.11-12.2.a]
a. :
b. &
c. ,
d. – c

Answer 1

The friendly-looking puppy pawed on the window to attract the attention of the people walking by on the sidewalk.
The rest didn't make sense and what is the - c?