What must be true for a research question to be considered effective? Select two options. The question must be clear, concise, and have a single focus for research.
The question must be able to be answered using research from valid sources.
The question must be linked to the topic, either directly or indirectly
The question must be simple so that any audience will be able to understand it.
The question must have several components to cover as many subtopics as possible.

what are the sentences?

martians or other types of aliens represent a unique fear as opposed to zombies. vampires and other types of monsters.   in most sci-fi stories, aliens come from other worlds and have different or more advanced technology.   abductions and experimentation on human bodies that involve these technologies, or the use of these technologies against human beings and the use of unknown "powers", are a type of fear that's different from that of other types of monsters.