In speaking activities, a speaker often tries to avoid using a difficult word or structure and chooses to use a simpler one. What learning strategy does the speaker use?
解析：
考查口语交际策略。在口语活动中，说话者经常避免使用艰涩的词汇或结构，而使用比较简单的词汇或结构，这种交际策略叫作迂回策略(Avoidence)。故选D。