Answer:
This is an opinion, so there is no right or wrong. However, here are some pointers:
If you think it should be lower than 35, talk about how being younger could possibly give more opportunities, make the country more modern, etc.
If you think it should be higher than 35, talk about how being older can make sure the president is well-established and experienced, can make the country more stable, etc.
Hope this helps.
