Final answer:
The student's claims about the need for careful tuna consumption are supported by concerns regarding environmental impact due to overfishing and bycatch, as well as health risks associated with mercury in tuna.
Step-by-step explanation:
The claim made in the student's paragraph regarding the need to be cautious tuna consumers is supported by two main pieces of evidence. First, tuna consumption poses significant environmental concerns since many species of tuna are endangered due to overfishing. Additionally, the harvesting process often results in bycatch, which can harm other marine animals, such as dolphins. Second, there are legitimate health concerns related to the intake of mercury found in tuna, which can be particularly harmful to certain groups like young children and pregnant women.
Thus, the correct pieces of information that support the student's claims are:
- Canned white tuna has high levels of mercury that can be especially harmful to young children and pregnant women.
- To be considered a "dolphin safe" tuna fisherman, one must adhere to five strict guidelines set out by an international organization that protects dolphins.