Each of the following investments contributes to a higher quality labor force except:
a.
health care
b.
retaining experienced workers
c.
additional vacation and sick leave
d.
additional education and training

Additional vacation and sick leave

Explanation:

The quality of the workforce is associated with the development of employee skills and practices, which can be constantly obtained through training and education. This makes the employees more experienced and consequently more productive. In addition, there is now a concern of companies with the welfare of officials, since behavioral science suggests that happier people are more productive.

However, adding holidays apart from the package as well as medical leave make the employee less present at work and consequently produce less.

a: social security and social programs

fertile good for trade etc