Sentence Correction Guide 8, 6th ed.
Chapter 2: Grammar & Meaning
Problem set page 35. The underlined portion of each sentence may contain 1 or more errors. Each sentence is followed by a boldface sample answer choice that may change the meaning. Select A if the original version is correct, B if the boldface version is correct, C if neither is correct, and D if both are correct. If you select A, explain what's wrong with the boldface version. If you select B, explain how the boldface version corrects the original version. If you select C, explain why both are incorrect.
Question 1)
No matter how much work it may require, getting an MBA turns out to be a wise investment for most people.
Even though it requires much work
In the solutions (p. 37), it says the correct answer is A b/c change of meaning is unjustified.
Why wouldn't the answer be D (both are correct)? In GMAT sentence correction questions, can't two answers be correct even if the meaning is slightly different? Would we assume that the original sentence (in sentence correction problems) has the clearest meaning (even if it has other errors), and that any other options that slightly change the original sentence's meaning would be incorrect?
This also leads to my questions about Questions 4 & 5.
4) She is the most dedicated gardener on the block, watering the more than 50 plants in her yard every day.
watering more than the 50 plants in her yard every day
5) Hector remembers San Francisco as it was when he left 10 years ago.
as though he had left ten years ago
The bold text slightly changes the meaning of the original sentence for both of these, which is what it says in the solution explanation (p. 37) so I don't understand why the answer is D, both are correct (when, like in Question 1, the bold text is wrong because it changes the meaning of the original text)?
Also for #4, is it grammatically correct to say "the more than" and "more than the"? Usually we would just say "more than" without "the" on either side but which cases would it be correct? Is any version preferable to another for the GMAT?
Thank you!