After stating your thesis, follow up by demonstrating the importance of the topic, and explain why the audience or future audience should care about the topic. this why statement is often referred to as

audience relevance

Explanation:

Most importantly when stating a thesis we should show and present how the work in the thesis is relevant to the audience. In this way we would be able to connect our research work more to the people and the audience. We should be able to state how our work is going to benefit them, what the people should do in this regard and all the dos and don't must be mentioned clearly while stating our thesis.

i will say b. laboratory technician   and if wrong then sorry