Answer :
The double membrane. It's theorized that chloroplasts used to be their own single-celled organism in the environment (and therefore with its own membrane). Then, the theory states, a larger cell took in the chloroplast by endocytosis, which involves surrounding the chloroplast in the large cell's own membrane. The chloroplast would then have two membranes surrounding it. This is similar to the thinking for mitochondria becoming an organelle as well. Hope this helps! :)
Answer:
The trait of chloroplasts that support that explanation is that Chloroplasts have their own DNA.
Explanation:
On edge2020 the answer is D: Chloroplasts have their own DNA.
Hope this helps all of you!
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