From a distance, they both look like seals, but once you get up close you can actually see the difference. seals and sea lions are both fish-loving mammals. moreover, handy flippers propel them both through the water. but while seals have a tiny opening on the side of their heads, sea lions have actual earflaps. furthermore, sea lions use their back flippers like feet to scoot along the beach. on the other hand, seals must wriggle and roll to get ahead. on the whole, when you visit a zoo or theme park, it's the honking, barking, funny sea lion you're likely to find playing to the crowds for fishy treats, earflaps and all. in the passage about seals and sea lions, which transition is used to add an idea? a however b moreover c on the whole d while

D. While.

Explanation:

Transition words are those words or phrases that show the relation between sentences or parts of texts. They are mainly used for the necessity of joining words or sentences related to one another.

In the given passage, the details about the comparison between seals and sea lions are given in a great deal. By highlighting the main points of differences, the speaker successfully shows the differentiation between the two. And by using the word "while" in the sentence "But while seals have a tiny opening on the side of their heads, sea lions have actual earflaps", he manages to add an idea by presenting different facts about the two mammals.

he is suggesting that this widow is a strong woman, who is giving constructive criticism and she has enough to worry about, and she takes care of him, so he does not take it to heart.