Find the best solutions to your questions at Westonci.ca, the premier Q&A platform with a community of knowledgeable experts. Get quick and reliable solutions to your questions from knowledgeable professionals on our comprehensive Q&A platform. Join our platform to connect with experts ready to provide precise answers to your questions in different areas.

Is a level set of a function of three variables always a surface?
a. Yes, a level set of a function of three variables is always a surface.
b. No, a level set of a function of three variables can be a curve or a point.
c. Only if the function is linear.
d. It depends on the range of the function.