Final answer:
The probability that Mrs. Thomas will randomly select a daisy from the vase is 3/10, which means that the correct answer is A) 3/10.
Step-by-step explanation:
The question pertains to probability, which is a branch of mathematics. To find the probability of selecting a daisy from the vase, you need to divide the number of daisies by the total number of flowers available for selection.
Let's start with calculating the total number of flowers:
- 10 tulips + 12 daisies + 18 daffodils = 40 flowers in total.
Now, we calculate the probability of selecting a daisy:
- Probability (selecting a daisy) = Number of daisies / Total number of flowers
- Probability (selecting a daisy) = 12 daisies / 40 flowers
- Probability (selecting a daisy) = 3/10
Hence, the correct answer is A) 3/10.