Concept:
Vitamin A is essential for:
• Normal vision
• Maintenance of epithelial tissues
• Growth and immunity
Deficiency of Vitamin A primarily affects the eyes and can lead to:
\[
\text{Night blindness}
\]
Severe deficiency may also cause xerophthalmia and complete blindness.
Step 1: Analyze option A.
Night blindness occurs due to deficiency of Vitamin A affecting vision in dim light.
Hence, option A is correct.
Step 2: Analyze option B.
Goitre is caused by iodine deficiency.
Hence, option B is incorrect.
Step 3: Analyze option C.
Scurvy occurs due to deficiency of Vitamin C.
Hence, option C is incorrect.
Step 4: Analyze option D.
Hypertension is not caused by Vitamin A deficiency.
Hence, option D is incorrect.
Therefore, the correct answer is:
\[
\boxed{(A)\ \text{Night blindness}}
\]