which sentence includes a dependent clause

a. The package was heavy
b. It was a fancy hat
c. She smiled as she opened the package
d. Today is her 16th birthday

c. She smiled as she opened the package.

Which option means " a group of words that has a subject and a predicate and is a complete sentence?"

a. Noun phrase
b. Dependent clause
c. independent clause
d. prepositional phrase

c. independent clause

Which sentence begins with a dependent clause?

a. The children decided to play soccer in the park near their house
b. My friends and I are going camping today, and tomorrow my cousin is going to join us
c. When we go to school in the morning, we need to take our lunches and our backpacks
d. My dad is looking for his shoes while our dog is burying them in the garden

c. When we go to school in the morning, we need to take our lunches and our backpacks.