The number of neutrons is the atomic mass minus the number of protons.
1. 243, 729, 2187 the first one looks like 3 is being multiplied each time.
2. 32,16, 8 each number is divided by 2 to get the next number.
Answer:
Im afraid your question is incomplete so I can't answer accurately
Explanation:
However, I found this source that may be of help to you
https://www.cdc.gov/parasites/references_resources/index.html
The answer is B According to my google home speaker.
