To answer this question, you need to understand the different methods used to retrieve data from a database using the Hibernate framework.
Option A) Session.load() - This option is incorrect because the load() method in Hibernate throws an exception if the matching row does not exist in the database. It assumes that the requested data will always be present in the database.
Option B) Session.get() - This option is correct because the get() method in Hibernate returns null if the matching row does not exist in the database. It does not throw an exception and provides a safe way to handle cases where the requested data may or may not be present.
Option C) Session.fetch() - This option is incorrect because there is no fetch() method in the Hibernate Session class. It is not a valid method.
Option D) None of the above - This option is incorrect because Option B (Session.get()) is the correct method to use when you are not certain that a matching row exists in the database.
The correct answer is B) Session.get(). This option is correct because it returns null if the matching row does not exist in the database, making it the best method to use when you are not certain about the presence of the data.