Answer:
The correct answer is option C "Parallel.For"
Step-by-step explanation:
Parallel.For for the most part work best on external loop as opposed to inward circles. This is on the grounds that with the previous, you're offering bigger lumps of work to parallelize, weakening the administration overhead. Parallelizing both inward and external loops is typically superfluous. In the accompanying model, we'd commonly need in excess of 100 cores to profit by the inward parallelization.
Designers use the Parallel class for a situation alluded to as information parallelism. This is where a similar activity is acted in equal on various things. The most widely recognized illustration of this is in an array which should be followed up on. Using the Parallel class, you can use this procedure/operation on any sort of iteration, in Parallel.