List of top Verbal Ability & Reading Comprehension (VARC) Questions on Critical Reasoning

Critical Reasoning -- Strengthen Argument: 
"Cities with higher public-transport usage typically experience lower air pollution levels." 

Which of the following, if true, most strengthens the argument? 

1. Cars emit significantly more pollutants per passenger compared to public buses. 
2. Public transport systems are cheaper than personal vehicles. 
3. People prefer using their own vehicles for convenience.
4. Pollution levels vary with weather conditions.

Critical Reasoning -- Assumption Argument: 
"Flexible working hours will increase employee productivity because people perform best during the hours when they feel most energetic." 

Which of the following is a necessary assumption? 

1. Employees can accurately identify the hours when they are most productive. 
2. Productivity depends only on the time of day. 
3. Employees dislike rigid schedules.
4. Flexible hours reduce overall work time. 

Argument: 

"Introducing mandatory coding courses in schools will significantly improve students' problem-solving abilities." 

Question: 

Which of the following, if true, most seriously weakens the argument?