A) The source is probably not valid because it is based on an opinion.
He or she that wrote it did not go into a lab and see if the resources are true its just based on what he thinks it is.
If the patient and the caregiver are not in the right position when changing from the bed to the chair, a lot can go wrong. If the patient does not have the right support they could fall and injure themselves along with the caregiver and the caregiver needs to have the right angle to be able to support the patient because if they try to move too fast, the patient may get dizzy an the caregiver could easily hurt themselves too.
