What is the meaning of the word "catalyst" as it is used in the following sentence? tragedies are often a catalyst that causes communities to come together.

a a common enemy
b a complex chemical reaction
c something that causes a change
d an event that makes people sad

Read the sentence. our band practices on mondays at josef’s thursdays at lena’s and saturdays at my house. what is the correct punctuation

Since carmen was so hungry she stopped at the deli and brought a sandwich identify the dependent clause and circle the independent clause

Read the passage from sugar changed the world. sugar is different from honey. it offers a stronger sweet flavor, and like steel or plastic, it had to be invented. in the age of sugar, europeans bought a product made thousands of miles away that was less expensive than the honey from down the road. that was possible only because sugar set people in motion all across the world—millions of them as slaves, in chains; a few in search of their fortunes. a perfect taste made possible by the most brutal labor: that is the dark story of sugar. how does the comparison of sugar to honey reveal the authors’ purpose? it persuades readers that sugar tastes better than honey. it informs readers that there is a connection between slavery and sugar. it informs readers that honey had a major impact on society. it persuades readers that sugar is as important an invention as steel.