B. you need to brainstorm to generate ideas about the topic of the speech.
The answer is 'colluded', because it means that they schemed to do it secretly. The other options aren't possible here, and most of them are adjectives, and you need a verb.
D. <u>T</u>he <u>B</u>attle of <u>O</u>kinawa, the last and largest battle of the <u>P</u>acific <u>W</u>ar, was one of the costliest battles of <u>W</u>orld <u>W</u>ar II for both <u>A</u>mericans and <u>J</u>apanese.
Could you put a better picture of the tiles, i can't see them well
