Some information is missing from the chart below. Study the chart, then choose the answer that BEST completes the missing information in space 1, space 2, and space 3:

A.
space 1: semicolon,
space 2: ends an interrogative sentence
space 3: Where did parkour originate?

B.
space 1: colon,
space 2: connects two independent clauses
space 3: The parkour moves of today are dangerous for those who do not recognize their own limits; success depends on training and caution.

C.
space 1: period
space 2: ends a declarative or imperative sentence
space 3: The traceur or traceuse must be strong, in good shape, and something of a risk taker.

D.
space 1: hyphens
space 2: sets off asides that need emphasis
space 3: The parkour moves of today, especially the kong vault (where the traceur propels himself over a wall), are clearly derived from the military.