Final answer:
Augustus' building program in Rome was characterized by the construction of monumental arches, aqueducts, and basilicas, which reflected the multipurpose architectural evolution of Roman society and the emphasis on public utility and grandeur.
Step-by-step explanation:
The characteristics of Augustus' building program in Rome included a range of architectural feats that added to Rome's grandeur and functionality. These characteristics encompassed monumental arches, aqueducts, and basilicas, thus, the correct answer is d. All of the above. The grand building program under Augustus revolutionized Roman architecture with structures like the Ara Pacis Augustae, which was an altar that celebrated peace rather than war. Moreover, the use of true arches in constructions such as aqueducts made it possible to transport water throughout ancient Rome. The Roman basilicas constructed were public spaces that served not only as law courts but also were venues for other public assemblies, showcasing the utility and multi-functionality of Augustan constructions.