Final answer:
The given options do not correspond to the problem of finding centripetal acceleration, which involves a different calculation using speed, time, and curvature radius.
Step-by-step explanation:
The correct answer to the question regarding the runner's centripetal acceleration is not provided within the options given as they all refer to distances, not acceleration.
To solve such a physics problem, the formula for centripetal acceleration (ac) is used: ac = v2 / r. First, we would need to calculate the runner's speed (v) by dividing the total distance of the dash (200 m) by the time (23.2 s).
Then we would square this speed and divide by the radius of curvature of the track (30 m) to find the centripetal acceleration.
However, due to the nature of the question showing options that do not match the solution required for centripetal acceleration, we can conclude that there might be a typo or error in the provided options.
Since specific numerical values are not given to illustrate the calculation of the centripetal acceleration, we can only describe the process of how one would calculate centripetal acceleration when provided with the appropriate numerical information.
Regarding the perimeter of an oval track with straight sections and semicircle ends, to find the perimeter of the track, you would sum the lengths of the straight sections and the circumference of the semicircles.
The formula for the circumference of a semicircle is πr, where π is the value of pi (approximately 3.14) and r is the radius.
Since there are two semicircles in an oval track, their combined length is 2πr, and adding this to the length of the straight sections gives the total perimeter of the track. The distances are typically measured in meters.