Multiple choice technology

Which among the following is the root class

  1. NSString

  2. NSObject

  3. NSControl

  4. NSButton
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

NSObject is the root class in the Objective-C runtime and Cocoa framework. All other classes like NSString, NSControl, and NSButton inherit from NSObject, making it the base of the class hierarchy.

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