The correct answer is D. Practicing training follow up procedures.
In-service teacher training is a continuous process that helps teachers to improve their skills and knowledge. It can be made more effective by practicing training follow-up procedures. This means that teachers should be given the opportunity to apply what they have learned in the training to their own teaching practice. They should also be given feedback on their progress and support to help them overcome any challenges they may face.
A training package that is well prepared in advance can be helpful, but it is not enough to ensure effective in-service teacher training. The training must also be relevant to the needs of the teachers and must be delivered in a way that is engaging and effective.
Making in-service teacher training a residential programme can also be helpful, as it allows teachers to focus on their learning and to interact with other teachers. However, it is not essential for effective in-service teacher training.
Using a cooperative approach can be helpful, as it allows teachers to work together and to learn from each other. However, it is not essential for effective in-service teacher training.
Therefore, the correct answer is D. Practicing training follow up procedures.