[单选题]在每小题列出的四个备选项中只有一个可以替代句中划线的单词或词组，请将其选出。Apple gives suppliers a very low profit margin, which makes suppliers lack incentive and resources to improve workers' welfare and factory environment.（ ）
A
strategy
B
contributor
C
fund
D
motivator
正确答案：D
题目解析
本题主要考查划线词的近义词辨析。
strategy 战略，策略 contributor 贡献者；投稿者 fund 基金；资金 motivator 动力；激励因素
