My answer: DFeruza Matyakubova wrote:...
Suppliers are
1. growing
2. cutting
B,E does not keep with the above idiom.
C changes the meaning of the sentence. "natural growth rate" in the original sentence implies their growth on their own, without human intervention whereas "growing them naturally" could mean they are still farmed (someone is doing the "growing").
Finally, A is wrong because "rate" already has the degree of change with respect to time built-in so we need to use high/low as qualifiers. For example, one would say "high velocity" rather than "fast velocity". (velocity here being rate of change of distance with time).












