Mometry - MA3114 CR Unit Test
Unit Test Review
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On interval 0 sx < 211, where are the x-intercepts of y = cos(2x)?
and
O O, T, and 21
○ , Tand
○ and.

a

Step-by-step explanation:

The correct answer is A. Choice A correctly utilizes parallel construction (Researchers have announced that...and that...); moreover, the "core" of answer choice A is grammatical (Researchers have announced that fields emited can interfere...and that this interaction can bring..)

Answer choice D, the supposedly correct response, contains several questionable elements. First, "200,000" of which type seems to actually question which type these security systems are. Second, magnetic fields "interfering" with pacemakers is an incorrect verb tense. Finally, choice D changes the intended meaning by implying that the machines rather than the magnetic fields are causing the problem.