63.
Your Answer is
Correct Answer is D
Explanation
D is correct, because a colon can connect two complete sentences, and the latter sentence is an explanation of the previous sentence.
There is no punctuation between such as and the following noun, and A is excluded.
For example as parenthesis should be followed by to use (teach sb to do sth), exclude B.
Before and after the semicolon must be a complete sentence, excluding C.