Concept: Dr. S. R. Ranganathan gave Five Laws of Library Science. The fifth law states that “Library is a growing organism.”
Step 1: Understanding the given statement.
The statement says that a library building should have provision for future expansion. This means that the library will grow in terms of books, readers, services, staff and technology.
\[
\text{Future expansion} \Rightarrow \text{Growth of library}
\]
Step 2: Linking it with Ranganathan's laws.
The fifth law of library science is:
\[
\text{Library is a growing organism}
\]
This law means that libraries are not static. They grow continuously and therefore need space, planning and expansion.
Step 3: Checking the options.
The options mention only the first four laws. However, the correct law is the fifth law, which is not included among the given options.
Therefore, no correct option is given in the question. The correct concept is the 5th Law of Library Science.