In option c we can find the cutural influence on colors.. then y not C

aligned with yashgre20. I do believe that the element of cultural influence stands out in option C too.

Lets deconstruct the argument
Premise 1) All languages that have only six colours, only recognise Black,White,Red,Green Blue, and Yellow.
Premise 2) All languages that have only three colours recognises, Black , white and red.
Conclusion :- Brains ability to recognise colour is not influenced by culture. Meaning that people of one culture should identify the color as easily as the people of other culture

AIM IS TO WEAKEN THE CONCLUSION- to show that people from different culture have different response towards colours when they are asked to recognise or identify those colours.

A. While languages differ in their number of basic color terms, no language has been conclusively determined to have more than eleven such terms.
WRONG:- Talks about number of colours in a culture/language. we already know languages have different number of colours , some 6 some 3 some 11. Does not address the issue.

B. Every language contains mechanisms by which speakers who perceive subtle differences in hue can describe those differences.
WRONG:- Mildly strengthening . Tells us that people can identify even subtle difference in colour. we have to show people can't identify.

C. Among cultures employing only three color terms, the word “red” typically encompasses not only objects that would be called red in English but also those that would be called yellow.
HOLD IT :- Ok may be this is a good answer. If people point to yellow sunflower and say its red sunflower than it weakens, so hold this option.
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D. Several languages, such as Vietnamese and Pashto, use a single term to mean both blue and green, but speakers of such languages commonly refer to tree leaves or the sky to resolve ambiguous utterances.
WRONG;- strengthen the argument. Despite a single term for two colours , they know that leaves and sky are different coloured objects.

E. In a study of native speakers of Tarahumara, a language that does not distinguish between blue and green, respondents were less able to identify distinctions among blue and green chips than native speakers of Spanish, which does distinguish between blue and green.
CORRECT; BETTER THAN OPTION C. First it talks about two cultures that have different terms for different colours. (spanish and tarahumara). Secondly it tells that Tarahumara people cannot distinguish blue and green. It makes our argument weak. We can conclusively show that cultures/Language with less terms for colours get easily confused than cultures with more terms with colours. Thus telling us culture do play a important part in recognising colours.

The answer is E