Parents can no longer give consent to medical treatment for their children under the Adults with Incapacity (Scotland) Act 2000 after the child turns 16. At this age, children are considered capable of consenting to their own medical decisions. Additional powers would be necessary for parents to continue making those decisions thereafter. ;
Parents can give consent to medical treatment for their children until the age of 16 under the Adults with Incapacity (Scotland) Act 2000. After turning 16, a child is considered able to consent on their own, and parents need additional powers to make medical decisions for them. Therefore, the correct answer is B. 18.
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