Step 1: Understanding the Concept:
Khoa undergoes changes during storage.
Some changes are common, others are not.
Step 2: Key Formula or Approach:
No specific formula.
Need to know the storage changes in khoa.
Step 3: Detailed Explanation:
A. Hydrolytic rancidity - occurs during storage.
B. Softening of body and texture - does NOT occur (hardening occurs).
C. Increase in acidity - occurs during storage.
D. Decrease in colour intensity - does NOT occur (browning occurs).
E. Breakdown in milk proteins - occurs during storage.
Thus, B and D do not occur.
Step 4: Final Answer:
The changes that do NOT occur are (B) and (D).
Hence, the correct option is (D).