Corpesdoll <- MY USERNAME ON TWITTER i need friends and I'm so lonely at school :( this pandemic rlly hit hard on my social life, pls add me on twitter and we can be mutuals!

ya i dont like this stup-ied "cov-id thing" but ill add u :)

Explanation:

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

the transfer for conduction is the heat transfering from the liquid to the spoon

the transfer for convection is the heat rising from the liquid to the air

the transfer for radiation is the heat going through the sides of the cup and to the air

at least that is what i would do