Someone please help me and friend i beg

b) mutualism

hope this : )

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).

i think its 5049.

i hope this !

it's c (engineer's do their work with mechanical stuff not on any living being)