Lets check the validity of each one of our statements:
Statement A is false. The square root of a number less than 1 is greater than the number itself. In fact,

. Since

is greater than

,

is greater than

; therefore, statement A is false.
Statement B is false. The square root of a number greater than 1 is less than the number itself. in fact,

, whereas

. Since 2.64 is less than 7,

is less than

; therefore statement B is false.
Statement C is false. 
is actually less than 7 divided by two, so there is no way that

is between 6 and 8. In fact

. Since 5 is greater than 2.64,

is greater than

; therefore, statement C is false.
Statement D is true. 
. Since 2.64 is greater than 0.8,

is greater than

.
We can conclude that Jana should use statement D to create her list; also the correct order from <span>
least to greatest is: </span>

,

,

,

,