They began reading the genome sequence of organisms to determine the number and organization of operons.
Option (c);
EXPLANATION:
A genome means a complete set of DNA of the organism which includes all its genes. Genome sequencing means finding out the sequence of DNA nucleotides that forms the organism such as A's, C's, and G's. This sequence gives the genetic information of that particular segment of DNA.
Operon is a section of DNA containing the genes in sequence. They are transcribed into single mRNA that has sequence coding for all the adjacent genes. Thus, scientists started reading the sequence of the genome to understand the quantity and the group of operons.
