Ovid created suspense in "Pyramus and Thisbe" by dragging on Pyramus discovering the fate of his love which was all untrue. He did this by using many sentences that eluded to this discovery, causing Pyramus' death. Suspense is further carried on by Thisbe now having to discover her lover close to death, promising her own downfall in the name of love.
Example: If you want to explore the effect of salt on a plant growth, the control group would be a set of plants not exposed to salt, while the experimental group would recive the salt treament, so you answer is control group.