SOLUTION:
Step 1:
In this question, we are given the following:
Brian has reduced his cholesterol level by 6% by following a strict diet and regular exercise.
This means that the remaining level will be ( 100 - 6 ) % = 94%
Step 2:
If his original level was 280,
Then, the approximate cholesterol level now will be:
[tex]\begin{gathered} 94\text{ \% of 280} \\ =\frac{94}{100}\text{ X 280} \\ =\text{ }\frac{26,320}{100} \\ =\text{ 263.2} \\ \approx\text{ 263 } \end{gathered}[/tex]CONCLUSION:
The final answer is:
[tex]263\text{ -- OPTION D}[/tex]