Answer:
"Highly probable" means that the said event is likely to happen and that it is possible.
Answer: enact a value added tax
Explanation:
a
What’s the question we are supposed to answer
When combining two independent clauses, a comma must be placed before the conjunction.
Here is an example of combining two independent clauses with a comma and a conjunction (bolded):
It's summer in California. It is so hot.
It's summer in California, and it is so hot.