Final answer:
The probability of spinning a 'B' on a four-section spinner with equal-sized sections labeled A, B, C, and D is 0.25.
Step-by-step explanation:
The probability of spinning a 'B' on a spinner that includes letters A, B, C, and D, where each letter has an equal chance of being spun, is found by dividing the number of ways to spin a 'B' by the total number of possible outcomes.
Since there is only one 'B' and there are four possible outcomes, the probability is 1/4 or 0.25. Therefore, the correct answer to the question of what the probability of spinning a 'B' is 0.25.