Both A and C could be correct, but i'd go with A.
A colon after the word courses, since it precedes a list. A semicolon after today since it separates related ideas. A colon after advice. Double Quotes around travel while you’re still young. An apostrophe in youre. Semicolon after happy. Double Quotations around I just heard father say, We are giving your brother a surprise party. Single Quotations around We are giving your brother a surprise party because it is a quote inside a quote. An apostrophe after the second m in museum, indicating possession of the mummy display by the museum.
Based on this description the mood that has been set by the staging is B. Sinister