Analysis. Answer option C is correct.
Mark will specify the MinPoolSize clause of the ConnectionString property of the SqlConnection class as 15. The MinPoolSize clause of the ConnectionString property of the SqlConnection class is used to specify the minimum number of connections allowed in a pool.
== What is SqlConnection==
SqlConnection is a class representing an open connection to a Microsoft SQL
Server. It cannot be inherited. It is used to represent a unique session to
a Microsoft SQL Server 7.x database or later.
Answer options A, B, and D are incorrect. There is no clause such as ConnectionPool, PoolSize, or MinimumPoolSize for the ConnectionString property of the SqlConnection class.