The average layer will produce _____ eggs per year.

The average layer typically produces around 245 eggs per year, which aligns with the figure provided in choice B. This number is based on optimal conditions for hens, including proper nutrition, health care, and adequate lighting, all of which are crucial for maintaining egg production.

In commercial egg-laying operations, hens are often bred and managed specifically to enhance their laying capabilities, which generally leads to an average production of about 20 eggs per month. This production rate reflects the natural biological cycle of hens, and while some breeds can exceed this average slightly, it is recognized that around 245 eggs in a year is a reasonable expectation under good management practices.

Other figures, such as 150, 300, and 365, do not accurately represent the average production for layers. A hen laying 150 eggs would be considered below average, while 300 is more representative of high-performing breeds under optimal conditions, but still may not reflect the general average. Laying 365 eggs would imply a daily egg production, which is beyond the typical capacity of a hen due to its biological laying cycle, making it unrealistic.