C#.NET inheritance facts — select the correct statements. A derived class object contains all the base-class data. Inheritance cannot suppress base-class functionality. A derived class may not be able to access all the base-class data. Inheritance cannot extend base-class functionality. During object construction in an inheritance chain, construction happens from base towards derived.

Introduction / Context:
This question surveys several foundational truths about inheritance in C#. Understanding what is included in a derived object, accessibility of base data, and construction order is essential.

Given Data / Assumptions:

• We are dealing with standard single inheritance as in C# classes.
• “Suppress/extend” refers to behavior changes via override/new and adding members.

Concept / Approach:
A derived object physically contains base-class instance fields. It may not be able to access some of them (like private) even though they exist. Construction runs base → derived. Derived classes can both extend and override base functionality.

Step-by-Step Solution:

Verification / Alternative check:
Reflect a derived instance; you will see fields from the base. Attempt to access a private base field from the derived → compile error.

Why Other Options Are Wrong:
They include (2) or (4), both of which misstate how overriding and class extension work.

Common Pitfalls:
Equating “not accessible” with “does not exist.” The data exists in the object even if not accessible by name in code.

Final Answer:
1, 3, 5