Question

which organelle is labeled a?
mitochondrion
ribosome
golgi apparatus
lysosome

Explanation:

To answer this, one needs to know the characteristics and appearance of different organelles. Mitochondria are rod - shaped and often have a double - membrane structure. Ribosomes are small and can be free - floating or attached to the endoplasmic reticulum. The Golgi apparatus has a stack - like structure. Lysosomes are small, spherical organelles. Without seeing the actual label 'A' in the image, we assume based on general knowledge of organelle shapes and functions.

Answer:

No option can be determined as the label 'A' is not visible in the provided image.