Choose the option that is nearest in meaning to the underlined word The boss is quite inflexible once he has made up his mind.
Answer Details
The word "inflexible" means that someone is unwilling to change their opinion or decision. In this case, it is referring to the boss being unyielding or not willing to compromise once he has made up his mind. Therefore, the nearest option in meaning to "inflexible" is "unyielding."