In which sentence are all the words spelled correctly?

a. every shipment of jewelry from a foreign country must be inspected.
b. the zoology professor impressed us all with his knowledge.
c. it was quite humorous when the potatoes exploded in the microwave oven.
d. it was such a good day that we marked the occasion on the calendar

tom comes from a southern part of the hemisphere and down in the south they talk with a lot of slang the family doesnt quiet understand what tom is tryna say becaus ehe talks like a three year old but near the end they finally try and desihper toms letter and its a success i have no idea hwta book this is or how to even answere this question honeslty but i am a really fast typer so i did this actually incrediably quick with the swiftness of the flash

- "he is a very real person and his intent isn't to influence us vonnegut addresses this towards the end of the letter when he says, if we choose to curse, that is by our own individual means."