Contemplation is the process of thinking and turning something over in your mind. This is not a type of homework since there is no tangible output for measurement. An example of practice homework is a math worksheet where you complete the same type of problem repeatedly. This is designed to help you memorize the required steps needed to complete the problem. Integration is the combining of things. Connection is when you make connections between ideas or other things that have been learned. All of these can have a measurable product for the teacher to assess.
Contemplation is the only word listed that is not a type of homework. Practice, integration, and connection are all types of homework. The correct answer is A.