Instead, base your forecast on sensible proverbs that have stood the test of time.
what is the correction I need to make on this sentence
Instead base your forecast on sensible proverbs that have stood the test of time.
The sentence is already correct, but you can also add a comma after "Instead" for better readability: Instead, base your forecast on sensible proverbs that have stood the test of time.
The sentence appears to be correct as it is. There is no need for any correction.
The sentence you've provided is already well-constructed and does not require any corrections. However, if you would like to make a slight improvement, you can consider rephrasing it to:
"Instead, base your forecast on venerable proverbs that have withstood the test of time."
This version replaces "sensible" with "venerable," which means respected or admired, further emphasizing the reliability and credibility of the proverbs being referred to.