Answer:
The most correct option is B
Step-by-step explanation:
Option A is wrong because neither Health, Safety and Environment (HSE) Assurance nor Quality Assurance careers require travel as part of the career.
Option C is wrong because HSE Assurance careers primarily deals with the safety of it's workers while Quality Assurance careers deals generally with things/issues related to the products (of a company).
Option D is wrong because only HSE Assurance careers investigate accidents and they are also the only career responsible for teaching workers how to avoid workplace accidents (this option is right about this).
Option B is correct because both careers try to determine how to prevent different types of pollution. While HSE Assurance careers might/would be concerned with pollution that could lead to workplace accident, Quality Assurance careers would be concerned with pollution that could affect products (in anyway). Only Quality Assurance careers would actually use laboratory procedures to test methods to prevent pollution because a Quality Assurance career person must have a science laboratory background.