The SubmitChanges method in LINQ to SQL is used to commit changes made to objects in the DataContext to the associated database. This method ensures that changes are saved to the database.

In ADO.NET, you can execute a stored procedure using the ExecuteNonQuery method of the SqlCommand object. ExecuteNonQuery is typically used for executing commands that do not return any result set, such as INSERT, UPDATE, DELETE, or for executing stored procedures that do not return result sets.

The Sort property of a DataView is significant as it specifies the order in which the data rows are displayed. This property allows you to sort the DataView's rows based on the values of one or more columns, either in ascending or descending order, providing control over the presentation of data.

LINQ to Objects is specifically designed for querying in-memory data structures such as lists, arrays, and other collections. It allows developers to use LINQ query expressions to manipulate and retrieve data from these data structures efficiently.

In ADO.NET, monitoring and managing the connection pool effectively involves utilizing performance counters to track metrics such as the number of connections in use, the rate of connections being opened and closed, and the maximum pool size. These counters help in identifying any potential bottlenecks or performance issues related to connection pooling.

Code-First is the preferred approach when defining the data model using C# classes in Entity Framework. With Code-First, you write the C# classes first, and the database schema is generated based on these classes. This approach provides more flexibility and control over the database schema and allows for easy migrations and version control.

The correct option is Read data in sequential order. When working with a SqlDataReader, it's essential to iterate through the result set in a sequential manner using methods like Read(). This allows you to retrieve each row of data one at a time, which is efficient for processing large result sets without loading the entire data into memory at once.

The BindingSource component acts as a bridge between the data source (such as a dataset or data table) and the controls on a form. It facilitates synchronization of data between the controls and the underlying data source, making it easier to manage and manipulate data in WinForms applications.

Setting the Nested property of a DataRelation to true enables the creation of multiple levels of nesting within the dataset. This is useful when dealing with complex hierarchical data structures.

Exception handling in ADO.NET involves using try-catch blocks to capture and handle any exceptions that might occur during the execution of non-query commands. This ensures robust error management in database operations.