Final answer:
Nel's service club's goal, written as a decimal, is 0.55 ton. Therefore, D is the correct option.
Step-by-step explanation:
To find the goal of Nel's service club, we need to multiply the total goal of the animal shelter by the fraction representing Nel's service club contribution. The total goal of the animal shelter is 2 1/5 tons, which can be written as 11/5 tons. Nel's service club wants to collect and donate 1/20 of this amount, which is 1/20 x 11/5. To multiply fractions, we multiply the numerators and denominators separately: (1 x 11)/(20 x 5) = 11/100. Therefore, the goal of Nel's service club, written as a decimal, is 0.11 ton, which is equal to 0.55 ton when simplified.