Directions (1–5): In the following passage there are blanks, each of which has been numbered. These numbers are printed below the passage and against each, five words are suggested. One of which fits the blank appropriately. Find out the appropriate word in each Case.
Seed quality is an (1) aspect of crop production. For ages, farmers have traditionally been selecting and (2) good quality seed, since it was in their interest to do so. They knew and understood the importance of quality seed in product form.
However, with the advent of green revolution technology, based (3) on the high-yielding dwarf varieties of wheat and rice, mainstream thinking changed. Agricultural scientists, for reasons that remain (4), began to doubt, the ability of farmers to maintain seed quality (5).