Question

where are the free ribosomes found? attached to the mitochondria floating in the cytoplasm

Explanation:

To determine where free ribosomes are found, we refer to cell biology knowledge. Free ribosomes are ribosomes that are not attached to any membrane - bound organelle. Instead, they are located in the cytosol (the liquid part of the cytoplasm) and float freely within the cytoplasm. The option "Attached to the mitochondria" is incorrect as ribosomes attached to mitochondria are still considered bound in a sense, and free ribosomes are defined by their location in the cytoplasm.

Answer:

Floating in the cytoplasm