How does the dialogue in this passage add to the characterization?

the voyage
by katherine mansfield (excerpt)

"it's mr. penreddy, fenella, come for us," said grandma. she sounded . her white waxen cheeks were blue with cold, her chin trembled, and she had to keep wiping her eyes and her little pink nose.

"you've got my—"

"yes, grandma." fenella showed it to her.

the rope came flying through the air, and "smack" it fell on to the deck. the gangway was lowered. again fenella followed her grandma on to the wharf over to the little cart, and a moment later they were bowling away. the hooves of the little horse drummed over the wooden piles, then sank softly into the sandy road. not a soul was to be seen; there was not even a feather of smoke. the mist rose and fell and the sea still sounded asleep as slowly it turned on the beach.

"i seen mr. crane yestiddy," said mr. penreddy. "he looked himself then. missus knocked him up a batch of scones last week."

a. it illustrates the class difference between the characters.

b. it provides insight into the nature of relationships.

c. it defines the interpersonal interactions of the characters.

d. it sets the tone and mood of the passage.