If you know that photo means light and synthesis means putting together, you can draw that photosynthesis is, at least, putting light together. And with context-- you can figure out that photosynthesis is turning light into energy.
The answer to the question mentioned above is "intrinsic factor" and for the second line it is "parietal". Such that to complete the sentence we have it rewrite below:
Necessary for vitamin B12 absorption, intrinsic factor is/are secreted by parietal cells.
The answer is D.
hope it helps:)
Answer:
I'm pretty sure it is A. I'm sorry if I am wrong
Explanation: