Correct the underlined part in the following sentence:
A growing technology trend is to merge multiple devices with complimentary functions such as a phone, music player and the scheduling features of a planner.
The sentence is incorrect because it does not follow parallelism. A list that begins by naming devices (i.e. phone, music player) must continue and finish in that way. Although it is informative to include the details about a planner's features, it should be accompanied by the features of a phone and a music player if that is the way the sentence is being written. Therefore, choices A, B, C are incorrect. Choice B and C even add “and” again making the sentence read “...music player and and...” which is clearly wrong! Be careful; the test wants to catch you off guard.