Question Statement:
In the argument: '**Many economic analysts predict that autonomous tractors will rapidly displace human farm laborers.** This prediction, however, fails to account for the high cost of maintenance and frequent field breakdowns. Hence, human operators will remain indispensable for decades.' The boldface statement is:
Options:
- (A) A claim that the argument sets out to refute.
- (B) The primary conclusion supported by the argument.
- (C) Evidence demonstrating the success of autonomous tractors.
- (D) An undeniable scientific fact accepted by all experts.