Final answer:
The number of school lunches with carrots if 25 kids have packed lunch is 15.
Step-by-step explanation:
To find the number of school lunches with carrots if 25 kids have packed lunch, we can use the probability that school lunch includes carrots.
The probability of a school lunch including carrots is 3/5, which means out of every 5 lunches, 3 will have carrots.
Therefore, out of 25 packed lunches, we can expect approximately 15 lunches to have carrots.
So the answer is b. 15.