Finding the correct title

[Erbab]

I am preparing for IELTS. This paragraph is from a book called Cambridge Practice Tests for IELTS. However, I simply can not find the correct answer. I have the answer key, but it does not help me understand it because I think that my answer is also correct.

What do you think? Which title is suitable for the text? And Why?

For the first time, dictionary publishers are incorporating real, spoken English into their data. It gives lexicographers (people who write dictionaries) access to a more vibrant, up-to-date vernacular language which has never really been studied before. In one project, 150 volunteers each agreed to discreetly tie a Walkman recorder to their waist and leave it running for anything up to two weeks. Every conversation they had was recorded. When the data was collected, the length of tapes was 35 times the depth of the Atlantic Ocean. Teams of audio typists transcribed the tapes to produce a computerised database of ten million words.

Here are the titles;

A) New Method of Research

B) Non-Verbal Content

C) The First Study of Spoken Language

D) New Phrases Enter Dictionary

 

[GoesStation]

All four titles are incorrect because they don't use title-style capitalization. If you fix that, D is incorrect because the text doesn't say that the collected phrases are added to the dictionary. B and C are incorrect for what I hope are obvious reasons. That leaves A as the only possibility.

 

[Erbab]

B and D are also obviously incorrect for me. However, my answer was C and the correct answer is A.

These are written in the text that '' a more vibrant, up-to-date vernacular language which has never really been studied before'' and "For the first time, dictionary publishers are incorporating real, spoken English into their data."

I suppose that "a more vibrant, up-to-date vernacular language" is spoken language. So, this part of the sentence can be parapharased as "Spoken language which has never really been studied before."

Since I think in this way, my answer is C.

 

[Tarheel]

I would simply say vernacular.

 

[jutfrank]

It may be the first time this method has been used in this way but it's not the first study.