Most of the candidates who attempted this question could not give the required response to Part (c) of the question.  The required response for Part (c)(i) of the  question is: factors to be considered when developing a chosen solution for final idea in designing are
-           size;
-           material;
-           shape/form;
-           construction.
The required response to Part (c)(ii) of the question is: methods of carrying out an investigation when designing are:
-           observation
-           questionnaire;
-           interview;
-           literature review; and
-           experimentation.