PLEASE HEL What does isotonic fluid protect the cell membrane from?

A) Shrinking
B) Bursting
C) stretching

shrinking and I'm trying to keep typing because I need more than 20 characters on my answer

answer; ///as energy flows through an ecosystem,energy (decreases) at each

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.