Final answer:
The sequence of three numbers in Pi after 3.14 is 159, making the correct answer D. 159. Pi is an infinite, non-repeating decimal that represents the ratio of a circle's circumference to its diameter.
Step-by-step explanation:
The sequence of three numbers in Pi after 3.14 is 159. Therefore, the answer to the student's question 'In Pi, what are the next sequence of three numbers after 3.14?' is D. 159. Pi (π) is the Greek letter used to represent the mathematical constant that is the ratio of a circle's circumference to its diameter. Though often approximated as 3.14, the number is actually irrational, meaning it extends to an infinite number of decimal places without repeating.