interview at techsoloutions

 When processing thousands of data items in a .NET API, which method will you choose in terms of balancing performance and resource usage most efficiently ? 

foreach (var item in data) { 

 ProcessItem(item); } Parallel.ForEach(data, item => { ProcessItem(item); }); foreach (var item in data) { await Task.Run(() => ProcessItem(item)); } await Task.WhenAll(data.Select(item => Task.Run(() => ProcessItem(item)

2.reverse a string without reverse

3.state management