What is the subject in this sentence? High winds knocked down the tents.

Lisa is a high school student who went to see her guidance counselor. she was given a questionnaire that contained these questions: what activities do you enjoy the most? the least? which things would your job need to include in order to make you feel satisfied? what things are you especially good at? what values, beliefs, or principles are most important to you? what issues or causes do you care about? which best explains why lisa’s guidance counselor asked her these questions? so she could see her personal vision and plan achievable goals. so she could set her priorities and adjust her goals. so she could visualize her future andd plan achievable goals. so she could identify her milestones and adjust her goals.