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Q. The concept of 'survival of the fittest' was 1st advocated by
The phrase "survival of the fittest" was first coined by Herbert Spencer, a philosopher and sociologist, after reading Charles Darwin's work on evolution. Spencer used this phrase in his book "Principles of Biology" (1864) to describe natural selection.
However, Charles Darwin (A) later adopted the term in later editions of his book "On the Origin of Species", as it aligned with his concept of natural selection.
Thus, Herbert Spencer (B) is the correct answer.
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