ANSWER: The statement Ramin is likely to include inside his cover letter is "I AM A MECHANICAL ENGINEER"
EXPLANATION: when applying for a job, your cover letter should properly introduce who you are. Employers always look out for your cover letter, to determine if your CV worth being screened.
Since Ramin is a mechanical engineer, it is assumed that will be his first sailing point, as he will mention that, while introducing himself to the employer. For Ramin to apply for a job as a mechanical engineer, that means such jobs suits mechanical engineering profession, that's why it is necessary Ramin should introduce himself as a mechanical engineer.
A) "The diseases we immunize against are not gone and they are still deadly."
This quote best shows the harm that can come from a child not being vaccinated for deadly diseases. In this quote it shows that a child who contracts a disease that he or she could be vaccinated for may end up dead. Option B would support the idea of not vaccinating and the question needs evidence to support vaccinations. Option C is neutral either way. It is simply stating a fact without encouraging for or against vaccinations. Option D addresses parents concerns that vaccinations lead to autism. This does not imply that parents harm their children by NOT vaccinating them.