Because of less availability and greater demand for scientific research, platinum remains consistently expensive, like gold. A. Because of less availability and greater demand for scientific research, platinum remains consistently expensive, like gold.
B. Because of less availability and increased demand for scientific research, platinum remains consistently expensive, like that of gold.
C. Because of decreased availability and increased demand in scientific research, platinum remains expensive, like gold.
D. Because of decreased availability and increased demand for scientific research, platinum remains expensive, like gold.
E. Because of decreased availability and greater demand in scientific research, platinum remains at a consistently high price, like that of gold.
OA after some discussion
note the for vs in
less /greater does not indicate reduction/increase from earlier time-frame
The right choice would be between B and E. as all others are comparing Noun Gold with Expensiveness of Platinum. I think it should be "B" as the message from the sentence coming from, Availability of Platinum is already less, increased in demand make it consistently expensive.