Complex Versus Compound Sentences

What is the conjunction in the following sentence?
You may take a pet on a trip if you plan ahead.

• may
• on
• if 
• plan

Is the sentence simple, compound or complex?
Although there are many stories about the unicorn, it is only an imaginary animal.

• simple
• compound
• complex

Is the sentence simple, compound or complex?
Long-ago explorers had no binoculars or cameras.

• simple
• compound
• complex

Is the sentence simple, compound or complex?
Stories spread about the unicorn, and we can still read them today.

• simple
• compound
• complex

After, although, because, since, until, when....combine what type of sentences?
(Also known as subordinating conjunctions)

• simple
• complex
• compound

The kitten was warm and soft.

• simple
• compound
• complex

Sammy is a great writer, but his spelling is terrible.

• simple
• compound
• complex

Be sure to turn off the lights when you leave the room.

• simple
• compound
• complex

Let's play Checkers and Monopoly.

• simple
• compound
• complex

I like tulips, and I like roses.

• simple
• compound
• complex