Multiple choice

________ class provides method signatures without implementation

  1. Data class

  2. Base class

  3. Abstract class

  4. Derived class

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Abstract classes provide method signatures without implementation, requiring derived classes to provide concrete implementations. Option A (Data class) is not a standard OOP term. Option B (Base class) may have full implementations. Option D (Derived class) inherits from others rather than defining signatures.