An infant who has been breast-feeding may use mostly and a slight degree of when learning to suck from the nipple on a bottle.
assimilation;
accommodation accommodation;
assimilation accommodation;
encoding encoding;
assimilation

A) assimilation;

accommodation

Explanation: Assimilation is simply the process of collecting new information and fine tuning them to best fit the experience one already has while accommodation is the process of adjustment an old experience to best receive new information for proper understanding.

So a child who has been breastfeeding before may mostly require new information added to his experience and slightly adjust his previous experience to best receive the new information when learning to suck from the nipple of a bottle.

Hence he or she mostly requires assimilation and a slight degree of accommodation to perform the task.