Although Online Travel Sites have made the Local Travel Agent Obsolete GMAT Sentence Correction

Question:
Although online travel sites have made the local travel agent obsolete, the digitization of the ticketing process in the commercial bus industry reduced the average occupancy while the previous year’s costs were increased to double.

(A) digitization of ticketing in the commercial bus industry reduced the average occupancy while the previous year’s costs were increased to double.
(B) digitization of ticketing in the commercial bus industry reduced the average occupancy while increasing costs to double those of the previous year
(C) digitization of ticketing in the commercial bus industry reduced the average occupancy as cost were increased to twice of the previous year’s
(D) ticketing digitization in the commercial bus industry reduced the average occupancy as it doubled the previous year’s costs
(E) ticketing digitization in the commercial bus industry reduced the average occupancy while costs were increased to twice that of the previous year

“Although online travel sites have made the local travel agent obsolete, the digitization of the ticketing” - is a GMAT sentence correction question. These types of questions contain grammatical errors in the underlined sentence and we have to choose the correct statement from the options. GMAT sentence correction is a part of GMAT verbal.

Answer: D
Explanation:

The correction that is being asked for for the given phrase can be verified using the guidelines below:

• Parallelism
• Examination of two distinct aspects
• Modifiers

The following is the sentence structure:
The local travel agency has been rendered obsolete by online booking services, yet the average occupancy in the commercial bus sector decreased as a result of the digitization of tickets while expenses climbed by twofold.

Option A: Incorrect
A is the incorrect answer. The only reason for it to be incorrect is the fact that the previous year’s cost cannot be doubled now. The cost of present time can be double of previous years. This does not fit correctly in the passage.

Option B: Correct
Choice B is the correct choice. This is in agreement with the SV. It has compared the increasing costs to the occupancy very well. Hence this is the correct answer.

Option C: Incorrect
This option is incorrect. This is incorrect for the same reason A was incorrect. The cost cannot be increased to twice the previous value. Everything in this sentence is fine except the cost. Hence, this is the wrong choice.

Option D: Incorrect
This is incorrect. The previous year’s cost cannot be doubled now. If it is the cost of the present time then it can be twice that of previous years.

Option E: Incorrect
This is the wrong decision. The issue with this sentence is how the term "that of" is used. The phrase "those of" should have been used in place of the word "that." Hence, this is a grammatical mistake. This made Option E incorrect.

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