Select the most appropriate option to fill in the blank.

He is diligent, therefore he will _________.

succeed

The most appropriate option to fill in the blank is succeed.

• Remain means to stay in the same place or condition. It does not make sense in the context of the sentence because it does not describe the outcome of being diligent.
• Fail means to not achieve something that you set out to do. It does not make sense in the context of the sentence because it does not describe the outcome of being diligent.
• Fall means to move downwards or to lose your balance. It does not make sense in the context of the sentence because it does not describe the outcome of being diligent.
• Succeed means to achieve something that you set out to do. It is the most appropriate option to fill in the blank because it describes the outcome of being diligent.