A. While Virginia was an oasis of agricultural productivity, additional colonies specialized in a multiplicity of cherished commodities.
Option A is the best answer that uses precise language to revise the italicized section of this passage.
From the passage, we discover that the italicized sentence talks about some people that grew things and the others that produced things.
In precise language, we see that Virginia as oasis of agricultural productivity were those that grew things. While the additional colonies who specialized in a multiplicity of cherished commodities, produced things. The multiplicity simply refer to the multiplying of commodities which means that there was increase in production.