To solve this question, the user needs to know about synonyms in Oracle and how they can be used to eliminate the need to qualify the view name with the owner name.
Option A is incorrect because CREATE PRIVATE SYNONYM is not a valid command in Oracle.
Option B is correct because Scott can create a public synonym for the EMP_DEPT_LOC_VU view using the CREATE SYNONYM command. Once the synonym is created, he can use it to reference the view without specifying the owner name each time.
Option C is incorrect because CREATE LOCAL SYNONYM is not a valid command in Oracle.
Option D is incorrect because the syntax of the CREATE SYNONYM command is incorrect. The correct syntax is CREATE SYNONYM synonym_name FOR object_name, where object_name is the name of the view or table.
Option E is incorrect because synonyms can be created not only for tables but also for views.
Option F is incorrect because Scott can create a public synonym for the view. Mary does not need to create a private synonym.
Therefore, the correct answer is:
The Answer is: B. Scott can create a synonym for the EMP_DEPT_LOC_VU by using the command CREATE SYNONYM EDL_VU FOR mary.EMP_DEPT_LOC_VU; then he can prefix the columns with this synonym.