Select the option that is related to the fourth term in the same way as the first term is related to the second term.

Xylem : Plants :: ? : Human

Xylem : Plants → Xylem is responsible for transporting water and nutrients in plants.

A) Arteries – Arteries transport blood, just as xylem transports water in plants. Correct

B) Liver – The liver is an organ, but it doesn't primarily function in transport. Incorrect

C) Kidney – The kidney filters blood but doesn’t transport nutrients. Incorrect​

D) Heart – The heart pumps blood but doesn’t transport it like xylem does. Incorrect​

Thus, the correct option is (a) Arteries.