Contract forbids.....

barron wrote:The new contract forbids a strike by the transportation union

A) forbids a strike by the transportation union
B) forbids the transportation union from striking
C) forbids that there be a strike by the transportation union
D) will forbid the transportation union from striking
E) will forbid that the transportation union strikes

A is the correct answer

Pls explain the reasoning?

i selected B as it sounded idiomatic

Idiomatically, we say "forbidden to", not "forbidden from". So, (b) is idiomatically wrong.

As an aside, we do say "prohibited from".

The idiom usage forbid x from Y is wrong. Forbid is one of the few verbs that take only infinitive form. hence forbid X to y will be the correct idiom form. C is subjunctive form and can be used only with verbs like demand,dictate,insist,mandate,propose,recommend,request,stipulate,suggest etc. Hence
B,C and D are ruled out."Will denotes future tense but then it uses "srikes" which is simple present. So tense usage is wrong here. Hence E is ruled out. Hence A, which has correct idiom usage and correct tense usage.