Do I need to practice questions for areas such as Business Valuation and Risk Management for contructed response? As I haven’t seen any of these areas being tested in Section C over the past few years.
The questions in Section C can include anything of the topics in the syllabus. There will not be a full question on either or the topics you mention, but they could certainly be part of a question.
By attempting all of the questions in your Revision Kit you will be covered for whatever is asked.