How do humans spread Asian Carp? a
They find their eggs in the river and give them to scientists to study.
b
They tell authorities when they catch one and they throw them back
c
They use them as live bait in new places of open gates with their boats.
d
They clean and drain their boats after they have gone fishing in a lake.

d

Explanation:

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

i think its 5049.

i hope this !