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Nuclear Fusion (physics Only) (GCSE Physics)

The following is a GCSE Physics test covering 'Nuclear Fusion (physics Only)' from the broader topic Atomic Structure. The test is geared towards the AQA exam board style syllabus.
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When mass is lost during a fusion reaction and converted into energy, which equation gives the energy released?
Why are helium nuclei (alpha particles) useful inside a fusion plasma such as an operating D–T plasma?
Which atomic-structure fact is true and important for understanding fusion fuel?
Explain what nuclear fusion is in simple terms.
Which particle conservation law must hold true in any fusion reaction?
Which property of the nuclei must be overcome for fusion to occur, and how is it overcome?
Why are strong magnetic fields used in tokamak fusion devices?
What is a plasma, in the context of fusion reactors?
What is one environmental advantage frequently cited for fusion power compared with fossil fuels?
Which fusion reaction is the primary focus for experimental fusion reactors because it has a high cross-section at “lower” temperatures?
In a deuterium–tritium fusion reaction, what is the kinetic energy carrier that mainly heats the plasma?