The chairman observed that Andrew was the most qualified candidate for the job

Analyze the question

The question doesn't show which word is underlined. The likely candidate is "qualified", since the sentence is about Andrew's fitness for the job. (Other words in the sentence, like "observed", are not matched by any of the options.) So we need the word closest in meaning to "qualified".

Explain the concept

"Qualified" means having the necessary skills, training, or credentials to do something. In a job context, it means fit or suitable for the position.

Solution

Let's test each option as a replacement for "qualified":

• A. suitable: "the most suitable candidate for the job". This is natural and keeps the meaning.
• B. accommodating: this means willing to help or oblige others. It says nothing about skills or credentials.
• C. responsible: this means dependable or accountable. It is a personal trait, not a measure of fitness for a job.
• D. interesting: this means arousing curiosity, which has nothing to do with competence.

Only suitable carries the idea of being fit or right for the job.

Answer: A. suitable

Tip: In "nearest in meaning" questions, substitute each option into the sentence and see which one keeps the original meaning. Also watch for options that are true words but belong to a different idea, like "accommodating" and "interesting" here. If the underlined word isn't clear, focus on the word the whole sentence depends on, here "qualified".