Answer:
- Evaluating.
Step-by-step explanation:
Evaluation is a meticulous process that intends to examine or assess an idea or argument in order to determine its worth or significance and draw conclusions over it.
As per the given description, Giuseppe is 'evaluating' by questioning the idea of considering 'Global warming as a hoax' and his attempt to examine the validity of the claim that 'the Earth is warming actually or not'. As there is no evidence that substantiates this claim that makes him draw the conclusion that the 'author's idea could be partial as it has no objectivity in it(according to his evaluation and due to unavailability of evidences to validate his claim). Thus, this process exemplifies that he is 'evaluating'.