The environment ministry (a) / has sanctioned several (b) / many proje...
Correction: Change "many projects for" to "projects for the"
Explanation:
The sentence talks about the environment ministry sanctioning projects for the conservation of river Ganga. However, there is an error in the usage of the phrase "many projects for". Here, "many" is redundant as the word "several" already conveys the idea of multiple projects.
We need to use the correct article before the word "projects". In this case, "the" is the correct article to use as we are talking about specific projects that are aimed at conserving river Ganga.
Hence, the corrected sentence would be:
The environment ministry has sanctioned several projects for the conservation of river Ganga.
The environment ministry (a) / has sanctioned several (b) / many proje...
The answer is quite obvious which is c .... the reason being in b part several has already been mentioned....so there's no need for many to be mentioned again