Identify the INCORRECTLY spelt word in the given sentence and select the option that rectifies the spelling error.
Many promote bamboo planting for erosion prevention and to riverse the effects of global warming.

The correct answer is Reverse.

Step-by-Step Explanation:

1. Analyze the given sentence:
"Many promote bamboo planting for erosion prevention and to riverse the effects of global warming."

2. Identify the spelling error:
In the sentence, the word "riverse" is spelt incorrectly. The intended word is meaning to turn something back or undo, which is correctly spelt as "reverse".

3. Evaluate the options:
- Reverse: Correctly rectifies the misspelled word "riverse".
- Bambboo: Incorrect spelling of "bamboo".
- Efeccts: Incorrect spelling of "effects".
- Prevension: Incorrect spelling of "prevention".

Therefore, the option that correctly rectifies the spelling error is Reverse.