Which sentence is punctuated correctly?

a.
on her mediterranean cruise, mamie visited barcelona, spain; nice, france; and pisa, italy.

b.
the dates of the meetings are: june 1-7; july 4-10; and august 21-27.

c.
jamie has studied these languages: french; latin; urdu; and portuguese.

d.
dutchess county; new york, windham county; connecticut, and louisa county; virginia are all rural.

The sentence that is punctuated correctly is option A. On her Mediterranean cruise, Mamie visited Barcelona, Spain; Nice, France; and Pisa, Italy. A semicolon is used in this sentence because more than one of the units in the series are using the punctuation mark commas. 

Because the soup was too cold, I warmed it in the microwave. A compound-complex sentence is comprised of at least two independent clauses and one or more dependent clauses. Example: Though Mitchell prefers watching romantic films, he rented the latest spy thriller, and he enjoyed it very much.Explanation:theres no answer choice

5 examples of a compund complex sentence

1she had a nightmareI was sleeping

2I went shoppingI forgot my shopping list

3she kept runningmy sister was exhausted

4I am always lateI don't have a watch

5I am scared of dogsI was attacked by a dog