Answer:
For generations, they had tried to make a living planting in unfavorable and spoiled soil.
Explanation:
Vivid adjectives are those adjectives that projects or describes a clear and definite image of a thing/ the thing described. And to give a vivid description of the given sentence, it is important to identify the adjective.
The adjective in the sentence is "bad" that described/ modifies the noun "soil". Adding a vivid adjective to the sentence, the new sentence will be-
"For generations, they had tried to make a living planting in unfavorable and spoiled soil.
"
The vivid adjectives are "unfavorable" and "spoiled".
