Strange and exotic. Hope this helps!
Study in the mornings. That is the time that John wakes up earliest. The brain will be more awake and since that is the first thing that you do which is study in theory you will be more alert and able to memorize what you have studied.
The answer is D
I just did the question
The example that contains an error in logic as worded is:
D. Mark's usual reason for not turning in his homework was because he forgot his backpack.
Here, we have an adverb of reason (because), which functions as a subordinating conjunction and makes up an adverbial clause of reason. Using the word "because" after previously using the word "reason", implicates some sort of redundancy.
The logical structure to express this idea would be the following:
D. Mark's usual reason for not turning in his homework was that he forgot his backpack.
