The correct answer is: Only I and III are strong.
Argument I is strong because it is based on the evidence that debarring people with educational qualifications higher than the optimum requirements will further aggravate the problem of educated unemployment. This is a valid concern, as it is likely that these people will not be able to find jobs that match their qualifications, and this could lead to frustration and resentment.
Argument II is weak because it is based on the assumption that people with higher educational qualifications will create complexes among employees and affect the work adversely. This is not necessarily the case, as there is no evidence to suggest that people with higher qualifications are more likely to be difficult to work with. In fact, they may be more motivated and productive.
Argument III is strong because it is based on the principle of equality and the right of individuals to pursue their own interests. It is unfair to debar people from seeking jobs simply because they have higher qualifications than are required. This would be a violation of their basic rights.
Argument IV is weak because it is based on the assumption that higher qualifications will lead to increased productivity. This is not necessarily the case, as there are many other factors that contribute to productivity, such as motivation, experience, and teamwork. In fact, people with higher qualifications may be less productive if they are not challenged in their work.
Therefore, only arguments I and III are strong.