Answer:
Grammar translation approaches involve focusing on language rules and working with written texts; however, these approaches fail to develop communicative competence in the target language.
Step-by-step explanation:
Ineffective means that it is unsuccessful or that it does not produce any significant or desired effect. As a result, grammar translation approaches are considered inadequate and poor because do not help learners to acquire communicative competence in the target language.
The rest of the options are incorrect because they fail to indicate any undesired effects of grammar translation approaches.