The correct statement : Bromide ions are oxidised by losing electrons
Further explanation
Redox=The reaction of addition/reduction of oxidation number
Oxidation is an increase in oxidation number, while reduction is a decrease in oxidation number.
In the redox reaction, it is also known
Reducing agents are substances that experience oxidation
The oxidizer is a substance that is reduced
Reaction
2Br⁻ + Cl₂⇒ Br₂ + 2Cl⁻
Oxidation : Br⁻ to Br₂ (-1 to 0)⇒oxidized
Reduction : Cl₂ to Cl⁻(0 to -1)⇒reduced