In some of the vector problems, for example, 2013 paper, visualisation of how planes and lines intersect is crucial to solving the problem.
some examples here
hopefully it helps
H2 math: Visualise intersection of planes and lines
Is there life after O/A-Levels? Definitely! How well a person does in tertiary education is correlated with job opportunities open to the person. Discuss issues pertaining to nstitutes of higher learning here.