Considering that they would come in contact with one another in the car, that would then be exposed to the disease as well. Since communicable disease can be passed on by direct contact.
Effective communication is obviously influenced by different fators among which we can surely include acceptance of responsibility. You have to consider that when someone is taking responsibility for his actions this will make the person who he's talking to view him more favourably, as a more responsible person and perhaps even as someone who wants to sensibely solve problems.
Spermatozoa is the form of sperm that is fully matured