What is "Mugunghwa Kkoci Pieot Sumnida" mean?

After swimming for hours he was tired what is the personal pronoun in the sentence below

In nectar in a sieve, rukmani marries a tenant farmer of the class. brahmin kshatriyas sudras vaishyas

Scientific inquiry refers to the diverse ways in which scientists study the natural world and propose explanations based on the evidence they gather. select the best answer from the choices provided t f