Final answer:
The tuning fork with a frequency of 515 Hz will produce the highest pitch among the given options, as pitch is directly proportional to frequency.
Step-by-step explanation:
A tuning fork that produces a sound with the highest pitch will have the highest frequency. Of the options provided, tuning fork A with a frequency of 515 Hz would produce the highest pitch.
Pitch is directly related to the frequency of the sound wave, with higher frequencies producing higher pitches. The other tuning forks listed have lower frequencies and thus would produce lower pitches than the 515 Hz tuning fork. Therefore, tuning fork A is the correct answer to the question.