Final answer:
The species shown represents the transition state for the reaction of 1-bromopropane with OH⁻. It is an intermediate in the reaction, which means it is formed in one step and consumed in a subsequent step.
Step-by-step explanation:
The species shown below represents the transition state for the reaction of 1-bromopropane with OH⁻.
A transition state is a high-energy, temporary state that exists at the highest point along the reaction pathway. It is formed during the course of a chemical reaction but does not appear as a reactant or product. It is represented by the symbol (‡) and is often depicted with dashed lines indicating partial bonds.
In this case, the species shown is not a reactant (a), product (b), or catalyst (c), but an intermediate (d). Intermediates are formed in one step of the reaction and consumed in a subsequent step. They can be thought of as transient species that help facilitate the overall reaction.