What should be done with the oseltamivir capsule if a client has difficulty swallowing it?

When a client has difficulty swallowing oseltamivir capsules, opening the capsule and mixing its contents with food is an appropriate action. This method can assist patients, especially those who may have difficulty ingesting whole capsules due to conditions such as dysphagia or other swallowing disorders. Mixing the medication with a small amount of soft food, such as applesauce or yogurt, can help ensure that the client receives the entire dose without altering the medication's effectiveness.

It is important to note that the other options suggest methods that either compromise the integrity of the medication or do not provide a viable alternative for administration. Swallowing it whole, dissolving it in water, or prohibiting any alteration might not accommodate the needs of all patients and could lead to issues with medication adherence or absorption. Thus, option A provides a practical solution suited to the needs of the client while maintaining the efficacy of the medication.