The correct route of administration for long-acting forms of penicillin is: a. Intramuscular b. Intravenous c. Oral d. Sublingual

Intramuscular

Explanation:

Intramuscular is a method of administering injection directly into the muscles for effective functioning.

Long acting penicillin are administered intramuscularly because of penicillin sensitive microorganisms that are subsceptible to low serum levels which is associated with penicillin dosage in the body and penicillin Has low level of solubility therefore it is slowly released into the muscles sites.

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

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.