Answer:
d. relational Select, Project, and Join operations individually or in combination
Step-by-step explanation:
SQL is short for structured query language. The SQL Select command allows the user to obtain data from a database. After the data is computed, the output is in a tabular form which is known as the result set.
All the queries begin with the Select command. The column and the table names are clearly noted in the instructions. This command can also execute projects and join several operations in combination or individually.