Concept:The question tests the ability to identify the correct antonym (opposite) of the word "abundant".
Explanation:"Abundant" means present in large quantities or more than enough.
The opposite of "abundant" is "scanty", which means very small or insufficient in amount.
Rainfall that is abundant is heavy or plentiful, while scanty moisture is dry or very little.
The other options do not directly contrast with "abundant":
"Uncertain" means not definite, "negative" means harmful or lacking, and "reduced" means made smaller but not necessarily insufficient.
Therefore, "scanty" is the best fitting antonym in this context.
Answer:A. scanty