Final answer:
It is stored in isolated environments. Database management systems resolve this by centralizing data storage and managing relationships between different data sets, improving data integrity and accessibility.
The correct answer to the question is B.
Step-by-step explanation:
The question 'What impedes the storage of relational data that database management attempts to solve?' refers to the common challenges faced in the storage of relational data before the implementation of sophisticated database management systems (DBMS). The correct answer is B. It is stored in isolated environments. Without a proper DBMS, data tends to be stored in multiple, disconnected databases or files with no efficient way to relate the data to each other, leading to issues such as data redundancy, inconsistency, and difficulty in data retrieval and integration.
Database management systems aim to solve these challenges by providing a centralized system where relationships between different sets of data can be easily defined and managed. Relational databases are designed to handle this by allowing cross-referencing of related data through primary and foreign keys, enhancing data integrity and accessibility.