Which of the following best describes a feature of a Vector?

A vector is specifically defined as an organism that does not cause disease itself but is capable of transmitting pathogens from one host to another. This is primarily seen in various types of insects or animals, making them crucial in the life cycle of many pathogens. For instance, mosquitoes can carry the malaria parasite, and ticks can transmit Lyme disease.

While vectors can include various organisms, their role is fundamentally linked to their ability to act as carriers, rather than being independent pathogens themselves or causing the direct death of their hosts. This distinction is essential to understanding how diseases spread and the role that vectors play in epidemiology.

The other options do not accurately encapsulate the characteristics of vectors. They do not possess the qualities of being independent pathogens, always killing their hosts, or lacking the ability to carry pathogens. Such clarifications further reinforce the understanding of what defines a vector in biological and ecological contexts.