Answer:
D) I thought I saw a skeleton in the woods; it turned out to be just a network of branches and vines.
Step-by-step explanation:
A semicolon can join together two complete sentences.
"I thought I saw a skeleton in the woods; it turned out to be just a network of branches and vines."
This can be split into two complete sentences that were on either side of the semicolon:
"I thought I saw a skeleton in the woods".
You only need to add a period for the syntax to be correct.
;
"it turned out to be just a network of branches and vines."
Since you only need to capitalize the first letter, this is a complete sentence.
Proper punctuation for other answers:
A) No matter what anyone else thinks; I happen to like this movie.
=> No matter what anyone else thinks, I happen to like this movie.
B) However calm he may have looked; he was a nervous wreck on the inside.
=> However calm he may have looked, he was a nervous wreck on the inside.
C) Here is what you must bring to the game; binoculars, a sandwich, and a drink.
=> Here is what you must bring to the game: binoculars, a sandwich, and a drink.