Which of the following is a complex sentence?

a. as i expected, she showed up late.

b. mark wanted blueberry pie and vanilla ice cream.

c. sue gave jim a new racket, and he left for the tennis courts.

d. eileen bought pants but not a new jacket.

The correct answer is A. As I expected, she showed up late

Explanation:

In grammar, a complex sentence is a type of sentence that includes at least one independent clause (set of words that express a complete idea and do not need from any other clause) and one or more dependent clauses (set of words that need from another clause to stand). Besides this, in most cases, a complex sentence includes a subordinated conjunction for example, because, if, as, after to link the clauses. This means, from the options includes the only one that is a complex sentence is "As I expected, she showed up late" because in this there is an independent clause "she showed up late" a dependent clause "As I expected" and also the word "As" is a subordinating conjunction that is also a common element in complex sentences.