The correct option is C Succinyl - CoA to succinic acid
During the conversion of succinyl CoA to succinic acid, a molecule of GTP is synthesized. This is a substrate level phosphorylation process.
In the presence of enzyme succinyl CoA synthase, succinyl CoA is hydrolysed to CoA and succinate. Energy is liberated during the process and is used in the synthesis of ATP in plants, and GTP in animals.