Respuesta :
it would be A, synthesis essays pull from multiple sources.
Answer: A) Synthesis.
Explanation: From the given options, the word that correctly completes the sentence is the corresponding to option A: synthesis. A synthesis essay is a written work that takes a unique viewpoint about a central idea, theme, or topic, and backs it up with a combination of multiple sources. The other options are incorrect because "synthesize" is a verb (and we need an adjective before the word "essay") and "synthetic" and "synthetically" are referring to the material or way something is made.