Answer:
c) semicolon
Explanation:
A semicolon (;) indicates a pause and usually divides independent clauses. In case of a list in which the items are already separated by commas, further assortment of items should be set apart by semicolons. An example of a list separated by semicolons is:
During his tour of London, Jack enjoyed visiting the British Museum, the National Gallery and Saint Paul's Cathedral; seeing Buckingham Palace, the Houses of Parliament and Tower Bridge; and taking a cruise along the river Thames.
