Concept:The underlined word is
efficiency.
We need to choose the word that is most nearly opposite in meaning and that fits the gap.
Explanation:Efficiency means completing a task with the least waste of time and effort.
The correct opposite should express a lack of ability to do a job successfully.
Lateness is about time, not performance, so it is wrong.
Capability is similar in meaning to ability, so it is not opposite.
Laziness may reduce efficiency, but it is not the direct opposite of the word.
Incompetence means the inability to perform a task successfully.
This is exactly the opposite of efficiency and can correctly fill the gap.
Therefore, the best choice is option C.
Answer:C. incompetence