By using the 'Categories - one answer' (drop-down menu) type of questions, we enable the respondents to choose one answer between several possible answers (categories). The answers are presented in the form of a drop-down menu instead of buttons. It is advisable to consider the possibility that we did not anticipate all possible responses/answers and, if necessary, add the category 'other' to the question, but with this type of question we can not enable the answer 'other' semi-open type in order for respondents to write their answers.
By using the 'Categories - one answer (Dropdown)' question type, respondents are given the option to choose one answer from a number of possible answers (categories). The answers are presented as a drop-down list instead of buttons. It is advisable to consider the possibility that we have not foreseen all possible answers, and to add an 'Other' category to the question if necessary, but for this question type, it is not possible for the 'Other' answer to be a semi-open type where respondents could write their own answers.