There is no article or answer choices so how are people gonna answer this
The correct answer is option d: merchants
In grammar rules, an antecedent can be identified in a sentence because it is later replaced by a pronoun. An antecedent also refers in a sentence to something that happened in the past.
In the sentence provided as an example, the Venetian 'merchants' is the noun that is later replaced by its respective pronoun (theirs). The verb brought also tells us it was something that happened in the past.
Darn I do not know but go on google and look up the answers i hope that that will help if not ask for help.
Sorry
Natural selection is the process by which favorable traits are passed down through different generations of a species in order to adapt and likely survive within the changing environment.