The correct answer is Successive processing.

According to the PASS Model of Intelligence, successive processing is the ability to integrate stimuli or information into a sequential order. Learning of digits, alphabets, and multiplication tables are all examples of tasks that require successive processing.

In contrast, simultaneous processing is the ability to integrate separate stimuli or information into a knowledge system as an interrelated whole. An example of a task that requires simultaneous processing is identifying the relationship between abstract figures in the Raven's Progressive Matrices test.

Planning is the ability to make decisions about how to solve problems and carry out tasks. It involves setting goals, identifying courses of action, and evaluating the effectiveness of those courses of action.

Data is not a type of processing in the PASS Model of Intelligence.

Therefore, the best answer is Successive processing.