You don’t have time to give a 30-minute answer outlining the different meanings of the word “evolution” and the evidence pro and con for each.
There lives in biology a great consensus truth that evaporates upon close scrutiny.
Darwinism sounds superficially plausible until one looks at real plants and animals with their irreducibly complex details.
Science has been so successful explaining other phenomena in terms of purely unintelligent natural forces, why should evolution be so different?
Remarkably, even Ernst Mayr was forced to tacitly acknowledge the challenge to Darwinism posed by convergence.