The answer is option C) Are, Their
The flock of seagulls are making their way up to the coastline.
They are NOT is maing their way up to the coastline, they ARE making their way up to the coastline. It's is also NOT correct. It's would be reffering to 1 persons thing. Their is plural. Its is singular.
Good Luck,
![\boxed{\boxed{- \ The \ Divergent \ -}}](https://img.qammunity.org/2019/formulas/english/high-school/k41yf7olm3k7pm9m7t9lifj4ashkam33jb.png)