B, Redundancy<span> is the grammatical error in the title. Using the words 'relationship between' and 'correlation' is redundant/unnecessarily repetitive. (Correlation is a mutual relationship or connection between two or more things).</span>
it is an adverb clause because enjoyed is acting like a verb
Answer:
a low-lying floodplain that had rich soil.
Explanation:
without the rich soil, plants wouldn't have all the nutrients they needed