These days, job opportunities are not as better (1)/ as they used to be (2)/ in the early 70's. (3)/ No error (4)

Answer

1

Explanation

good will replace better because
- the pattern used with as — as (Adv.) is as follows:
as + Adj. (in Positive Degree) + as
good `rarr` Positive Degree (no comparison is made) better `to` Comparative Degree (two things are compared)
best `rarr` Superlative Degree (more than two things are compared)
as — as `rarr` used for expressing similarity between one person/thing and another.
Look at the examples given below:
Shyam is as rich as Ram.
He does not play as well as his sister. Hence, These days, job opportunities are not as good is the right usage