Answers must be precise, resolving the question exactly as asked. Scoring of answers are based on the end result, not on the route or time taken to complete the task. Errant keystrokes or mouse clicks will not count against your score as long as you achieve the correct end result. Remember that the overall test is timed. While spending a lot of time on an individual answer will not adversely affect the scoring of that particular question, taking too long may not leave you with enough time to complete the entire test.
Answers are either right or wrong.
You do not get credit for partial answers. Check to make sure you have entirely completed each question before clicking the NEXT TASK button. Once you press the NEXT TASK button, you will not be able to return to that question. A question will be scored as wrong if it is not properly completed before moving to the next question.