选择1道 This was - was known - "the Survival of the Fittest"

很简单选C项.这是由What引导的表语从句
what was known as "the Survival of the Fittest".
what （作从句主语） be known as "作为.而著名"（相当于谓语） "the Survival of the Fittest".（宾语）
本句话的意思是“这就是适者生存著名的意义所在”