Which is the topic sentence of the following paragraph?

Through employment, one is often able to afford a decent living and avoid poverty. Education though is needed. Education alleviates poverty through skills acquired in the learning process. Skills such as carpentry, plumbing and masonry are relevant in our society. One can acquire these skills through technical and vocational training. Education reduces poverty in a number of ways.
Question 16 options:

a)

Education reduces poverty in a number of ways.

b)

Skills such as carpentry, plumbing and masonry are relevant in our society.

c)

Education though is needed.

d)

One can acquire these skills through technical and vocational training.