How to use social media effectivively by students?

Which sentence has an adjective clause? a. mike rode his bike on mountain trails because he found them challenging. b.gary donated to charity whenever he could. c.liz, who could always make people laugh, was loved by the whole block. d.ever since adam was a little boy, he had his father in the fields

It is true that prior to 1914 the united states often had been disturbed by events in other continents. we had even engaged in two wars with european nations and in a number of undeclared wars in the west indies, in the mediterranean and in the pacific for the maintenance of american rights and for the principles of peaceful commerce. but in no case had a serious threat been raised against our national safety or our continued independence. what is the theme of this excerpt? a. the responsibility for americans to avoid involvement in war. b. america’s history of international involvement. c. a new kind of threat to american security. d. america’s history as a peaceful nation.

What does the word subordinate mean in this sentence? the office manager spoke to her subordinate in a cordial tone.