Question

For the three cyclic structure select a bond that must be broken and really formed in order to change the configuration or comformutions as indicated

Answer 1

Covalent bond
Or
Electrovalent bond
Or
Ionic bond
If u are talking about chemistry

Answer 2

Since the question is not complete, according to the complete question which is put in some other websites I'm putting up the answer. There are organic compounds which are shown here. So according to the question, the bond which must be broken so that a new compound can be formed is a covalent bond. Covalent bonds are formed by the shared pair of molecules. Hence it is the answer. Hope you'll like it.