In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in the blanks.

Scientists have determined that the human tongue is attuned to several (1)_____ like sweet, salty, bitter, sour, savoury and possibly fat. Telling the difference between these tastes was crucial for human (2)______.

A

season; reality

B

relish; live

C

tang; alive

D

flavours; existence