【正确答案】正确答案：Because they wanted to communicate gentleness and love．

【答案解析】解析：根据题干中的give flower to people定位到第4段首句。该句句末的不定式短语表达了嬉皮士给人们花朵的目的，题目问Why，与原文对应，故可简答为Because they wanted to communicate gentleness and love。