\uD83D\uDCD8 Answer
In this case, yes, you can accept variations. The following further guidance is provided: The rapid vocabulary naming task does accept multiple forms of a word as correct (e.g., for a picture of a man running, correct responses could include run, running, or runner). In addition, children should not be penalized for poor articulation (e.g., “lawnmober” is said for lawnmower or “ippopotamus” is said for hippopotamus). This rule was adopted due to the fact that articulation errors are fairly common in young children. A general guideline in terms of pronunciation is to give credit for the item if another reasonable person would easily be able to decipher that the child was correctly identifying the picture.