What is the structure of the following sentence?
although i have already visited africa, i would certainly like to return.

a.)simple
b.)compound
c.)compound-complex
d.)complex

The correct answer is actually letter D) complex.

Explanation:

For this sentence to be a compound-complex one, it would need to have at least three clauses, two independent ones plus one dependent one. That is not the case here, since we have only two clauses:

1. Although I have visited Africa

2. I would certainly like to return

The main clause is the second one, "I would certainly like to return (to Africa)." The first one is a dependent clause started by the subordinating conjunction "although", which introduces an idea of contrast. Since we have one independent clause - a clause that expresses a complete idea on its own - and one dependent one - a clause that needs a main clause to express a full idea -, we have a complex sentence. The best option is, therefore, letter D.

synomenous

sry cant spell

i decided to stay late in the laboratory to continue my experiment with the lightbulb. at midnight, thomas edison opened the door and walked in with his head held high.

1. he leaned on the wall and observed me carefully.

2. his harsh scrutiny made me self-conscious of my skills in the lab.

3. perhaps it was just me, but the air in the laboratory began to thicken as i found myself having difficulty to breathe.

4. i turned to look at him fully as i mentally prepared myself for what my very first words would be to thomas edison.

5. the next couple of seconds shocked me. it wasn't me who spoke, but rather him and with diction i could never think of using in a simple sentence.

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hey, sorry if this was bad, i really didn't know what to write but i wanted to you. is there anything that you had to include within the excerpt?