C). They must be in a uniform format as required by law
Step-by-step explanation:
A 'safety data sheet' is described as the document that aims to provide the list of information regarding the occupational health as well as safety for using the different products like chemical compounds and substances like chemical mixtures, etc.
As per the question, a safety data sheet must 'be presented in a uniform format as per the law'. This sheet primarily intends to instruct the users for safely handling as well as using the product by bewaring them of the prospective hazards related to the use of that particular product which could be any format that could be stated in a 'uniform format' beginning with 'identification of the chemical' followed by various other steps like 'hazard identification, stability, physical and chemical properties, etc.' so that every user can understand the use of product in the systematic order comprehensively.is the correct answer