I believe the answer is head-on and port (left). The side lights are usually visible to vessels approaching from the front or the side. The red light usually indicates a vessel's port (left) side while the green light indicates a vessel's starboard (right) side. These lights ensure that there is safety at night as the vessels navigate.
The most straightforward answer is D - using an individual's genetic information to decide who can be covered for health insurance.
This is unethical because people have no say over which genes they were born with. Furthermore, applying this logic would mean that we are proponents of genetic determinism. While genes have an impact, a person can still choose to apply different protocols in his life that help him combat his chances for certain diseases.
It could be also considered unethical if people themselves would be provided guidance based on the genetic information collected, without any proper medical consultation beforehand.
Renewable sources of energy do not contribute to global warming. Use of these resources rather helps in mitigating the global warming. A few example of these are hydroelectric power, wind generated power, solar energy, geothermal energy, tidal energy, biomass energy etc.
The most important thing to note is that the vector does not get affected by the disease they are carrying. The vector can move from place to place without any hindrance and spread the disease to far away areas. This is the reason that vector borne diseases occur in large areas. Mosquitoes and flies are common vectors that carry germs and spread from people to people.