Ordering cell structures from largest to smallest

Steps:

• Recall standard sizes: nucleolus (1-8 μm), lysosomes (0.1-1.2 μm), centrioles (0.2 μm diameter), ribosomes (0.02-0.03 μm).
• Compare magnitudes: nucleolus exceeds all, lysosomes next, centrioles larger than ribosomes.
• Sequence decreasing: nucleoli > lysosomes > centrioles > ribosomes.
• Match to choices for exact order.

Why B is correct:

• Matches decreasing size order based on measured diameters in cell biology.

Why the others are wrong:

• A: Begins with small centrioles, not largest nucleoli.
• C: Positions tiny ribosomes before larger centrioles.
• D: Ends with sizable lysosomes after smaller structures.

Final answer: B