Conspiracy theorists suggest that if climate change is slowly turning the planet into an oven, then this must have been the outcome of our enemiesʼ intentional ______________. If there are no coincidences in the world, then everything, including ______________ events, can be controlled. It is only a matter of power and ______________.

The passage addresses conspiracy theories regarding climate change, portraying it as an enemy-initiated scheme. It argues that nothing happens by accident and that even significant events can be influenced by powerful forces. Reading the passage it is understood that a noun that suggests some covert and malicious action plan to accomplish some harmful goal is needed for the first blank; an adjective that means extraordinary or extreme (to emphasise controllable magnitude) is needed for the second blank; and a noun that implies an exceptional ability or skill that enables control over events is required for the third blank.

Of the choices given to us, both "machinations" (option B) and "plotting" (option C) fit the first blank. "Errors" (option A) doesn't fit because it negatess the idea of this being intentional, and "inaction" (option D) also doesn't fit because it means the opposite of conspiratorial action. 
For the second blank, "Catastrophic" (option C) is the only word that directly describes climate change’s worst impacts, which is critical for the narrative. "Outstanding" (Option B) is too vague (could mean "remarkable" without negativity), "Indescribable" (option A) focuses on mystery, not destruction, and "advantageous" (Option D) is absurd this in context.
For the third blank, "prowess "(option C) is the best choice. It pairs with power , and implies technical mastery, and also fits the conspiracy rhetoric. "Information" (option A) is irrelevant to power dynamics, "Determinantion" (option B ) just means persistence, and "performance"(option D) is nonsensical in this context. 

Hence, Option C is uniquely correct because it satisfies this precise lexical chain required by the conspiracy theory’s logic. The correct answer is therefor option C.