What type of phrase is necessary to the meaning of a sentence?

Commander mckee checked the dials and switches in the shuttle cockpit and determined that they were functioning normally. he then tested the communications systems that connected his ship with the mission control headquarters. he checked the fuel gauges and saw that there was enough fuel for the months-long trip to saturn. all of the other gauges and meters checked out normal, and the idling engines gave off a strong, reassuring hum. after a final glance around, mckee declared that the shuttle was finally ready for takeoff. he readied the brave astronauts under his command and the ground crew alertly awaiting the launch. the rocket took off and, racing through space, eventually arrived at saturn, where commander mckee and his assistants built the first successful human colony. 126 words, 9.8 flesch, 1180 lexile how could a change in emphasis best develop the events in this passage, making for a more interesting and exciting read?

"the bane of the internet" is written in first-person subjective point of view, so the narrator a) tells the story as it is happening b)tells the story as it is happened in the past c)is a minor character who tells the story as it is happening d)none of the above

Which evidence from the text best supports the idea that malcolm and donalbain believe they need to flee scotland before someone tries to murder them too?