Final answer:
The correct answer is 'mixed', as it refers to the biological context in which eggs and sperm are combined in a petri dish, which aligns with the provided information.
Step-by-step explanation:
The question you're asking pertains to the method by which eggs are prepared or processed. When eggs are cracked open and combined in a common container, they are usually prepared for cooking in a certain style. The options given to you are scrambled, pasteurized, poached, and mixed. In culinary terms, scrambled eggs are the result of cracking eggs into a container, beating them together, and then cooking the mixture. Pasteurized eggs are treated with heat to reduce the risk of foodborne illness. Poached eggs are cooked in water without their shell. However, in the context of fertility treatments, as indicated by the reference to egg(s) and sperm being mixed in a petri dish for fertilization, 'mixed' is the most relevant. The term mixed would apply as the closest match given the biological context, even though it is not a standard culinary term for egg preparation.