which of the following would represent a single displacement reaction between potassium bromide (k+br-) and iodine (i), which forms iodide (

kbr + i -> ki + br

kbr + i -> kbr + i

kbr + i -> k + ibr

Explanation:

Single Displacement reaction is a chemical Reaction in which one element in the salt is replaced with another element

for example,

A-B + C > A-C + B

electropositive replaces only electropositive elements from compound. same is true for electronegative element

in first reaction I being electro negative replaces Br from KBr so this is a single displacement reaction