（单选题）
The（）technique involves using project characteristics in a mathematical model to predict total project cost. Models can be simple or complex.
Acostaggregation
Breserve analysis
Cparametricestimating
Dfunding limit reconciliation
正确答案
答案解析
可以注意到该题的关键词为"mathematical model"和"predict total project cost"，再划分语句结构"The（）technique(主语)involves(谓语)using project characteristics in a mathematical model to predict total project cost"，易理解语句含义为"什么技术使用数学模型预测项目的总成本"。观察四个选项，ABD也可能应用数学模型，也可能只是简单的数字规定，但选项C 一定会应用数学模型，所以应该选择parametric estimating。
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