Which observation provides evidence that a cell is most likely eukarotic

The observation of nucleus and other membrane-bound organelles provides evidence that a cell is most likely eukaryotic.

Explanation:

The term eukaryotic refers to true nucleus or true kernel meaning that it has membrane-bound nucleus. Coiled structure of chromatin fibers can be seen in the eukaryotic nucleus.

This nucleus is bound by nuclear membrane, which can be seen attached or continuous with the stacked tube like structures of endoplasmic reticulum.

A double walled maze like Golgi bodies with ribosomes stacked to it and bean-shaped double walled mitochondria also can be uniquely observed in a eukaryotic cell .

the answer is a or when it says crossing over

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.