Supply the assumption example

New medical studies indicate that if the average employee improves his physical health, then his productivity also increases markedly. Company XYZ should therefore introduce mandatory exercise programs every morning in order to augment productivity.

The author assumes which of the following to be true?

1. The mandatory exercise programs will be successful in improving the physical health of the employees at XYZ.
2. Employees who take exercise programs at work are no more productive than are employees who take exercise programs outside of work.
3. Employees who exercise sleep better than employees who do not do so do.
4. Employees who exercise at work often complain of tiredness throughout the day.
5. Employees often resist mandatory exercise programs, viewing them as intrusions on their privacy and on their labor rights.