Final answer:
Jesus provided instructions to his apostles through the Holy Spirit after his resurrection and before his ascension.
Step-by-step explanation:
Through whom did Jesus give instructions to the apostles he had chosen? The correct answer is b) The Holy Spirit. According to the teachings of Christianity, after Jesus was resurrected, he appeared to his apostles and gave them instructions through the Holy Spirit before his ascension into heaven. These events are described in the New Testament and show the crucial role the Holy Spirit played in guiding the apostles after Jesus's departure from Earth.