Option (e) is correct. The textbook explicitly explains that despite the period 2001-2003 being marked by coalition politics and bitter rivalry between the BJP and its opponents, as many as ten amendments were passed in just three years. The reason given is that 'many of these amendments were based on an evolving consensus on certain issues.' The text further states that 'an overall consensus emerged in the country about these measures and therefore, amendments regarding these measures were passed without much difficulty.' This clearly indicates that the amendments were of a non-controversial nature and parties had an agreement on them. Options (b) and (d) are incorrect as the context states this was a period of coalition politics with 'bitter rivalry' between parties, not single-party dominance or absence of differences.