Final answer:
To obtain a lateral projection of the humerus with the patient supine, none of the positions described match the correct positioning, hence 'd. None of the above' would be the answer. The correct position would necessitate the patient to be on their back with adjustments for arm placement to get a proper lateral view.
Step-by-step explanation:
In order to obtain a lateral projection of the humerus with the patient supine, it is necessary to position the patient so that they are lying face up on the examination table. Given the options provided, none of them correctly describes the required position for a supine lateral projection of the humerus. Often, for a lateral view of the humerus, the patient may need to have their arm moved away from the side of the body. Since none of the options match, 'd. None of the above' would be the best answer. The precise positioning may involve internal or external rotation of the arm and adjustment of the imaging equipment to properly align with the humerus.