Which situation would be considered pseudoscience?

students gather to identify species of plants in their neighborhood.

students successfully petition for organic food in the cafeteria.

a student tries eating all natural foods for one month to see if she has more energy.

a student's lucky shirt him do well on a job interview.

there is no none of the above or all the above

sorry to ask you guys this but it was thrown at me with no information given to me.