What is the normal capacity of bladder?

Correct option is B

The normal urinary bladder capacity in adults is about 300–600 ml. While the bladder can hold up to around 600 ml before it creates a strong urge to urinate, the initial desire to void starts at approximately 150–200 ml. Explanation of options:
· (a) ✘ This range is too low and represents early sensations, not full capacity.
· (b) ✔ Correct, as this is the accepted range for adult bladder capacity.
· (c) ✘ This range exceeds the normal and may cause discomfort.
· (d) ✘ This is close to the maximum stretch limit and not considered "normal."