Answer:
table C
Step-by-step explanation:
function
* one object/ input must only have one image/ output
* only one-to-one relation and many-to-one relation is a fuction
table A
= one-to-many relation
= input 8 has two outputs ( -9 and -8 )
= not a function ❌
table B
= one-to-many relation
= input 7 has two outputs ( 12 and 13 )
= not a function ❌
table C
= one-to-one relation
= all input has only one output
= a fuction ✅
table D
= one-to-many relation
= input 10 has two outputs ( 0 and 4 )
= not a function ❌
