The american anthropologist edward sapir had formulated the problem and his student, benjamin whorf, drawing on his experience with the language of the hopi indians, developed a full-fledged theory now known as the theory of
(a) linguistic relativity principle
(b) cultural relativity
(c) linguistic nationalism
(d) phenomenology

the correct answer is (A) Linguistic relativity principle  

Explanation:

In linguistics, the Sapir-Whorf Hypothesis states that there are certain ideas or thoughts of an individual in one language that cannot be comprehended by those who live in another language. The hypothesis states that the way people think is hardly affected by their native languages.

the technology changed agriculture in an impacting manner since many people left the field work by a cellular or other technological appliances

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clean air is essential for health and survival

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clean air supplies oxygen that enables living organisms to breathe

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