The himalayas formed when
a. two plates collided
b. one plate submerged
c. a transform fault formed
d. lots of volcanoes erupted

A,b,c is the answer to the question

The answer is c, i, iii, and iv. this is because farming and mining deal with harvesting raw materials, construction work falls under manufacturing, and piloting a plane is a service. ii is wrong because making bread is using  raw materials to produce goods, which would fall under the secondary sector, not primary.