Answer: A. to organize ideas for comparing and contrasting two topics.
Explanation: A Venn diagram is an illustration that uses circles to show the relationships among things or groups of things.
EXPLAINS, IS
The tour guide EXPLAINS that either candles or a lantern IS used to see into the tomb.
Tour guide is singular. Therefore, verb used must be in singular form.
Lantern is singular and it is the nearest subject of the verb. Thus, the verb must also be in singular form.
Rikki tells Nagaina that he is not going to spare her egg and he will kill her.
I totally forgot that all of your cousins are coming too. That is correct grammar.