The answer is; E
This shows that these organelles were once free-living organisms with their own mechanisms for reproduction which they have retained even after years of symbiotic relationship with the higher organisms. During their duplication, they also replicate their own DNA. Their DNA does not have histones (as opposed to the DNA in the nucleus of their host eukaryotic cell) similar to that of simple organisms such as bacteria.
The Central Dogma states that first DNA is replicated into RNA and then the RNA leaves the nucleus and becomes Amino Acids. It is an inference because it cannot be observed, and it's only a prediction of what would happen, but it is the most likely inference
95% occurs in the small intestine.
The basement membrane is found between the epithelium and connective tissue.
<em> The image attached is a diagram from www.lamission.edu.</em>
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I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.
- Heather