【正确答案】 A

【答案解析】[理由] 原句实等于：
Local leaders are delighted at the prospect of hundreds of highly skilled jobs and training opportunities which are being created in the area.
*上列划线部分为关系代词which引导的定语从句，修饰之前的hundreds of highly skilled jobs and training opportunities(好几百个高技术性的工作和培训机会)。
根据上述，(A)应为正选。