Which is an advantage of the participant observation research method

Participant observation provides more flexibility with regard to qualitative research than other methods that use this approach. It allows researchers to maintain an open mind, giving them opportunities to follow up on different ideas, theories, and directions if something interesting occurs during their work.

Explanation:

the language of nature was a manifestation from god as he said "let there be light" and there was light the world began to assume visible, comprehensible form.

what ever we know now think of the old vision of creation we can be sure that with out the speaking of word -without language- we would have no science today with its striking power to illuminate the world.

the answer to your question is,

d. when a child was born.

-mabel < 3