1. Women's Voter Turnout: This pair is correctly matched. The gender gap in voter turnout has indeed narrowed significantly from over 11 percentage points in 1967 to nearly zero in recent elections, highlighting an increase in women's electoral participation.
2. Women in Parliament: This pair is incorrectly matched. While the number of women MPs has indeed increased, reaching 78 in 2019, they constitute only about 14% of the Lok Sabha, not 33%.
3. Removal of Speaker: This pair is correctly matched. The Speaker can indeed be removed only through a resolution requiring a majority of the total Lok Sabha membership, which ensures the stability and protection of the office from political pressures.
4. No-confidence Motions: This pair is incorrectly matched. Historically, there have been only three instances of no-confidence motions against the Speaker, not more than ten, and all of them failed, highlighting the procedural difficulty in such removals.
Thus, only pairs 1 and 3 are correctly matched.