What was mr. bach's "fight for freedom"?

Bach wanted to be free to make music the way he felt and heard it but those that employed Bach wanted a certain type of music. Bach said the only freedom was found in following your own heart.

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.

The answer is ocho because ocho is 8