add guard clause for answer_selected?

app/models/form/question.rb

@@ -229,6 +229,7 @@ class Form::Question
   end
 
   def answer_selected?(case_log, answer)
+    return false unless type == "select"
     case_log[id].to_s == answer.id.to_s
   end
 

spec/models/form/setup/questions/property_reference_spec.rb

@@ -6,6 +6,7 @@ RSpec.describe Form::Setup::Questions::PropertyReference, type: :model do
   let(:question_id) { nil }
   let(:question_definition) { nil }
   let(:page) { instance_double(Form::Page) }
+  let(:case_log) { FactoryBot.create(:case_log) }
 
   it "has correct page" do
     expect(question.page).to eq(page)
@@ -38,4 +39,8 @@ RSpec.describe Form::Setup::Questions::PropertyReference, type: :model do
   it "is not marked as derived" do
     expect(question.derived?).to be false
   end
+
+  it "returns false for answer_selected" do
+    expect(question.answer_selected?(case_log, {})).to be false
+  end
 end