Question

which letter shows a volume of 50 ml?

Explanation:

Step1: Analyze the graduated cylinder scale

The graduated cylinder has markings. Let's check the intervals. Wait, maybe there's a typo, but looking at the lower part, the markings around D: let's see the numbers. Wait, the visible numbers near D: 50? Wait, the image shows near D, maybe the scale. Wait, the numbers: 50 (maybe), 70, 90, 110, etc. So the volume of 50 mL should be at the level marked near D. Wait, let's check the arrows. Arrow D is at the lowest, near 50? Wait, maybe the scale: from the bottom, the first visible number near D is 50? Wait, the problem is to find which letter (A, B, C, D) shows 50 mL. Looking at the positions: A is at 230 - 250 range, B at 170 - 190, C at 90 - 110, D at around 50 - 70? Wait, maybe the scale has 20 mL intervals? Wait, no, let's see the difference between 90 and 110 is 20, 110 to 130 is 20, etc. Wait, below 90: 70, 50. So D is at 50 mL? Wait, the arrow D is pointing at the 50 mL mark? So the answer should be D.

Answer:

D