Simple and compound sentences

I'm helping my grandma make a quilt.

• This is a compound sentence.

• This is a simple sentence.

We will make it out of colorful fabric, and it will be big enough for my bed.

• This is a simple sentence.

• This is a compound sentence

Which of the following words are coordinating conjunctions?

• but

• although

• since

Which sentence is correct?

• Mark finished his homework, so he can play outside.

• Mark finished his homework so he can play outside

Timmy loves to play basketball, _______ he doesn't have a basketball.

• or

• but

• for

We can go out for dinner now __________ later.

• or

• but

• yet

My classmate didn’t study for the test, __________ she passed.

• and

• so

• yet

 Seoul is a large city, _________ it is located in Asia.

• and

• but

• so

Elephants are big, __________ blue whales are even bigger.

• so

• for

• but

Is this the latest magazine ____________ last month’s edition?

• but

• or

• and