Answer:
D) Carl is simply obsessed with rugby; he eats, breathes, and lives the game.
Explanation:
A complex sentence can be explained as type of sentence which posses an independent clause and also posses one or more dependent clauses. An independent clause is one that can stand on it's own as a sentence, while but dependent clause can not stand on it's own, even though it posses a subject as well as a verb. The two clauses are usually joined together with a "subordinating conjunction" . Example of surbordinating conjuction are; since, until as well as when.
Let us analyse the given sentences as the independent clause and The dependent clause;
A) Jake complimented Linda after she made her speech.
✓independent clause: Jake complimented Linda
✓dependent clause: she made her speech.
B) As I waited for my appointment, I read a magazine
✓independent clause : I read a magazine
✓dependent clause :As I waited for my appointment
C) Those who don't like to get wet should always carry an umbrella
✓independent clause :always carry an umbrella
✓dependent clause :Those who don't like to get wet
Therefore, only option "D" is not a complex sentence since there is no "subordinating conjunction" that joined the sentences and there are
many independent clause present.