We don't know, we don't have the book. Explain maybe?
Answer:
no
Explanation:
the popularity can't mean anything catrina has always been how it is
Is is a present tense verb.
Past of is is was and future tense of is is will/shall.
The correct answer should be Leonardo did not intend for his inventions to do harm.
I saw on the Internet that B and D are incorrect, so we have to choose between A and C. A is also incorrect because Leonardo had much greater plans for his inventions that simply to investigate the properties of snow. This leaves us with C as the correct answer - he wanted to advance science, rather than create a bad invention.