Consider the statement and the following assumptions and decide which of the assumptions is implicit in the statement.

Statement:
The entire north India, including Delhi remained 'power less' the whole day of $$19^{th}$$ December as the northern grid supplying electricity to seven states collapsed yet again.

Assumptions :
I. The northern grid had collapsed earlier.
II. The grid system of providing electricity to a group of states is an ineffective type of power supply system.

I. The northern grid had collapsed earlier.

• The phrase "yet again" implies that the northern grid has collapsed in the past, which makes this assumption implicit in the statement. The use of "yet again" suggests that it is not the first occurrence of this event.

II. The grid system of providing electricity to a group of states is an ineffective type of power supply system.

• The statement does not directly mention anything about the effectiveness or inefficiency of the grid system. It only states that the grid collapsed, but it does not provide an evaluation of whether the grid system is inherently ineffective. This assumption is not implicit in the statement because the statement does not make any claims about the overall effectiveness of the grid system.

Hence, the answer is Only assumption I is implicit.