The answer is D.) Teaches; is going.
There you go!
Answer:
miserly
Explanation:
because penny-pinching means "unwilling to spend or share money; miserly; mean."
and miserly means "of or characteristic of a miser."
exp: "his miserly great-uncle proved to be worth nearly $1 million"
D. by rehearsing, you will rob your presentation of its vitality
"The laughing boy in the boat likes sailing."