The word that comes in the blank is "evolutionary".
Evolutionary explanations of aggression propose that aggression serves a vital capacity as far as both individual survival and in addition regenerative potential. Rivalry emerges when assets are constrained and creatures must contend with a specific end goal to survive and repeat.
The correct answer is listening. It is because listening is involve between the speaker and the audience member in which as the speaker speaks about what he or she would like to share, the role of the audience member is to listen to the speaker and by this, they are likely to fulfill and complete both of the parties' transaction.
Answer: D is correct.
Explanation: the hero (Odysseus) is coming back from the Trojan war (Minor Asia) to his home in western Greece (island Ithaca) which takes him approximately 10 years.