Final answer:
The term for the study of all proteins produced by an organism is Proteomics, which examines the dynamic and variable proteome influenced by gene expression and environmental factors.
Step-by-step explanation:
The term that applies to the study of all the proteins produced by an organism is B) Proteomics. Proteomics is a branch of biotechnology that focuses on the entire set of proteins expressed by a given type of cell, which can vary under different environmental conditions. This field is closely related to genomics, as genes code for mRNAs, and these mRNAs ultimately encode proteins. Despite the fact that all cells in a multicellular organism possess the same genes, the proteins produced can differ greatly due to gene expression in different tissues, making the proteome dynamic and variable. Proteomics also involves studying the modifications and interactions of proteins post-translation, which affect the final function and architecture of the proteome. Such complexities are why proteomics is an essential tool for scientists to test hypotheses that originated on the genomic level.