The correct answer is D. <span>because it prompted other expeditions to explore Antarctica
Following his failed attempt, over 17 Antarctic expeditions launched by as much as 10 countries, all wanting to claim the unconquerable Antarctica.</span>
The correct answer is B) Have the neighbors eaten dinner yet? Because you can probably feel that sentence is the only one where correct tenses and agreement are used.
In A, it should be: Does Bailey have tickets to the concert?
In C, it should be: Are your parents coming to the baseball game?
Assuming we're just looking at this phrase, "learn'd" suggests that the astronomer studied to become intelligent in the astronomical field.
