Final answer:
The tax rate in 1995 can be found by subtracting the absolute change (2.7 percentage points) from the 2010 tax rate (4.3%), yielding a tax rate of 1.6% for 1995.
Step-by-step explanation:
The question asks to calculate the tax rate in 1995 if the tax rate increased by 2.7 percentage points up to 2010 when it was 4.3%. To find the tax rate in 1995, we have to subtract the percentage point increase from the 2010 tax rate. Hence, the tax rate in 1995 would be:
4.3% - 2.7% = 1.6%
Therefore, the correct answer is a) 1.6%.