The first thing we should do is
scan through the options to see the different aspects versus similar aspects. That way, we will have a better idea of what we are looking for as we read the full sentence.
We notice a
similarity in the usage of the word
'range' across options, which is usually accompanied by a
'from-to' form to indicate the range of items being talked about. However, with this in mind,
remember that the goal is to eliminate four answers and not pick out a right answer.
Similarly, we notice
differences in the use of the word
'also' in the beginning and the words that follow after the comma, which range from
'such' to
'from'. (see what I did there?) In terms of
'such', what follows is
'and'. In terms of
'from', what follows is
'to'. With this in mind, let's analyze what the sentence is saying now.
Lets exclude unnecessary words for now to simply get a gist of the sentence.
"Using a combination of x and y to do z, Anne completes a diary," and now we continue to describe other contents of the diary with reference to some sort of range. With the context in mind, it wouldn't be ridiculous or incorrect to use the word 'also' before the first comma of the underlined portion, so we eliminate that as grounds to decide the correct answer. Usage of 'covering' and 'detailing' are subjectifying 'Anne' and not the diary. So Anne could detail as well as cover, again none of which is out of scope or incorrect.
Therefore, our
only option is to look for differences after the comma and pick an answer based on that. Let's start with the
Process of Elimination, or PoE. ---
Option AUsage of
'which' indicates that the
diary is the main subject here. Everything fits until we arrive to the
second comma, which follows usage of the word
'from'. The sentence says there is a
range of topics
from her travels, thereby
limiting the aforementioned range to travels only.
- Now that we know we are discussing travels, we see
'such as' with an
example of a travel, which makes sense. Remember,
'such as' is not our preferred option over 'from' when it comes to describing the 'range' of something, but it is
not enough to cancel out the option completely.
- However,
'and the improvements' does not fit in with 'travels'. It is
not indicating a travel but instead introducing a
different subject. Therefore, we must look for
parallelism here between options based on commas to see if we can make sense of the mention of something different from
'travels'.
- Matching up
'from her travels' to
'and the improvements', we already know
'from' is followed by 'to'.
- Matching up
'such as her scaling' to
'and the improvements made', we see that the first gives an
action conducted by 'her' in a present tense, whereas the other simply presents a
noun followed by a verb + 'made/ed' verb form shows that the action took place in the past.
For instance,
'her improving the properties' would have been synonymous to
'her scaling the'.
Therefore, we eliminate option A---
Option BSimilar issues: lets rewrite this sentence as
range of topics, from xyz, and abc, example of abc. -
'range of topics', followed by comma and starting with
'from', therefore no other choice but to have
'to' to make sense of the sentence.
- However, we see that
'and' is used.
'And' can never be used, since it does
not fully indicate a range. Since, for this option, we are
describing a range, we cannot take any other connecting words apart from
'from-to'.
Therefore we eliminate option B---
Option CSimilar issues:
Rewrite as:
range of topics, xyz and abc, example of abc. - Usage of word
range must be followed by
'from-to'Eliminate option C---
Option Drewrite as:
which also detailed a range of topics, from xyz, example of xyz, to abc, example of abc. OR:
range of topics, FROM xyz... TO abc.- correct usage of
'from-to' following the usage of word
'range'- correct parallelism, comparing
'her travels', which is noun form, to
'the improvements', which is noun form.
- both have mentions of examples (example of zyx, example of abc) that follow after introduction of general topic (in our case, xyz and abc) -
parallelEnough for us to KEEP Option D. ---
Option ERewrite as:
which covered a range of topics, SUCH AS xyz AND ALSO abc, example of abc- Using
'and' and
'also' together is redundant; when you say
x and y, you are already including both as part of your sentence. Adding
also, making it
x and also y doesn't do anything to change the meaning of the sentence. Instead, one could very well say your sentence basically means
x and and y. . In GMAT, our goal is to
keep it concise and to the point, so redundancy is an absolute
no.
- Other issues are similar -
'range' followed by
'such as-and'. While
'such as-and' could be correct usage in terms of comparing two things or placing two things side by side, we
cannot use this to indicate a range.
- While
'her scaling' and
'her having made improvements' are both parallel
(VERB FORM), notice how
'her having made' is a mouthful. In light of keeping it concise and looking at all other issues found with the sentence, this parallelism in verb form does
little to confirm this answer as correct for us.
Eliminate Option E-------
Therefore, after PoE, we can correct confirm our answer is D.