Which verb form correctly completes this sentence? Es necesario que las autoridades nos medidas para proteger el medio ambiente.

A.
sugiera
B.
sugieran
C.
sugieras
D.
sugeremos

Es necesario que las autoridades nos sugieran medidas para proteger el medio ambiente.

B. sugieran

Explanation:

sugiera- one person

sugieran- more than one

sugieras- one person

sugeremos- yourself and one or more than one

autoridades is talking about more than one person so the answer would be sugieran.

Hope that helped! :)

when you are going to explain a procedure,   the first thing to do is to name the parts or the apparatus you are going to describe in terms of how it or they function. also it is important to know who is going to operate it and the abilities this man/woman requires to manage it.

the first is correct, the second is "la tienda de descuentos" meaning "the discount store", and the third is "ayer" meaning "yesterday".