Final answer:
Without the actual spectra for comparison, it's not feasible to determine the elements present in the mystery spectra. However, in living organisms, the most abundant elements are hydrogen, oxygen, carbon, and nitrogen, all of which are essential for the formation of complex organic molecules like carbohydrates.
Step-by-step explanation:
To identify the elements that contribute to the mystery spectra, we can look for specific patterns in emission or absorption lines that match known spectra of elements. These patterns are unique to each element and are like a fingerprint. When trying to match the mystery spectra to a reference, we look for lines that appear at the same wavelengths to determine the presence of specific elements.
According to the information you've provided though, it's not possible to accurately determine which elements are in the mystery spectra without seeing the actual spectral lines or being provided additional context.
However, considering the information related to abundance and chemistry of living matter, we can discuss the elements hydrogen (H), oxygen (O), carbon (C), and nitrogen (N). These four elements are the most abundant in living organisms. They're foundational to organic molecules, such as carbohydrates, which contain carbon, hydrogen, and oxygen according to the choices you've provided (Option C).