The most accurate response comparing the styles of the two claims is:
Claim 2 is written in a more formal style because it uses more complex sentences and advanced vocabulary.
Claim 1 is more personal and subjective, reflecting the author's individual experience and feelings about taking a walk. In contrast, Claim 2 takes a broader approach, relying on research and general statements about the benefits of outdoor time for students, which contributes to its more formal tone.