approval：when a plan, decision, or person is officially accepted批准，正式的 eg:The president has already given his approval to the plan. permission：when someone is officially allowed to do something允许，也是正式的 eg:You must ask permission before taking any photographs inside the church. consent：permission to do something不那么正式的允许 eg:He took the car without the owner's consent. 这一题是讲的计划被批准或者通过，所以用approval。   （本解析由诸葛粒提供）