Correct option is B
The most important nursing precaution during jejunostomy feeding is to keep the patient in high Fowler’s position. This prevents aspiration and improves tolerance of feed.
Explanation of options: (a) ✘ Feeds must follow prescription, but the critical nursing action during feed is posture. (b) ✔ Correct; upright position minimizes aspiration risk, essential in jejunal feeding. (c) ✘ Flushing is appropriate if blocked, but that is troubleshooting, not the primary precaution during feed. (d) ✘ Tube should not be changed hastily; only after medical assessment.