It would be A.
C and D are the ones that are closest to incorrect.
If we say pi equals 3.14, and then multiply that by 3, we get 9.42.
9.42/2 = 4.71
So it has to be less then 4.71.
The square root of 21 is about 4.5.
So therefore, since pi + 1 is about 4.14, that is incorrect.
5 is larger then 4.71, so that is incorrect.
2[tex] \sqrt{6}[/tex] would then equal [tex] \sqrt{6} * \sqrt{4} [/tex], and then [tex] \sqrt{24} [/tex]
The square root of 24 is extremely close to the square root of 25, so it would be extremely close to 5, which would be incorrect.
So A would be the correct answer.
