General instructions lets you create a set of instructions or other general body of text in your survey. This text will not be numbered like the other questions on the survey. Numbers only creates a question that can only be answered numerically. You can write the question however you want, but the system will only accept a number as an answer. This includes almost every character on the keyboard.
Single character limits responses to only one character, which can be any alphanumeric character.
Comment or paragraph allows an open-ended question in which survey participants can enter any text they like. This is useful for comments or short answer responses. When you review the survey results you will be able to read these responses. Pull down menu lets you enter a series of options from which survey takers can choose. These appear as a pull-down menu and respondents can choose only one item from the list.