One example of scientists taking different approaches that lead to the same result is
a). two scientists testing different hypotheses about the same observation.
b). two scientists repeating a third scientist’s experiment as published.
c). two scientists working on one experiment at the same time in different labs.
d). two scientists performing one experiment at different times in the same lab.

If I were to answer this question, I would choose A. In B, the scientists are not taking "different approaches" rather, they are both repeating a formerly published experiment. In C, the scientist are taking the same approach and are spatially separated. In choice D, the scientists are taking the same approach and are separated temporally. Hopefully this helps. If not, please ask me to clarify!

The answer is A. You're welcome.

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Proteins are the workhorses of the cell, controlling virtually every reaction within as well as providing structure and serving as signals to other cells. proteins are long chains of  amino acids  , and the exact sequence of the amino acids determines the final structure and function of the protein. instructions for that sequence are encoded in  genes  . to make a particular protein, a messenger ribonucleic acid (mrna) copy is made from the gene (in the process called  transcription  ), and the mrna is transported to the  ribosome  . protein synthesis, also called  translation  , begins when the two ribosomal subunits link onto the mrna. this step, called initiation, is followed by elongation, in which successive amino acids are added to the growing chain, brought in by transfer rnas (trnas). in this step, the ribosome reads the  nucleotides  of mrna three by three, in units called  codons  , and matches each to three nucleotides on the trna, called the anticodon. finally, during termination, the ribosome unbinds from the mrna, and the  amino acid  chain goes on to be processed and folded to make the final, functional protein