Assuming the underlined objective complement in the first sentence is the word incredible, the correct answer would be just that - Skiers called the record snowfall incredible.
Here, the word incredible is objective complement because it completes the object 'the record snowfall.' And given that it is an adjective (whereas the other underlined words such as nuisance and Bob are not - they are nouns), it is the only correct option.
To,
The Minister Of Agriculture
India
Date= 26/6/18
Subject : suggestion on boosting agriculture
Dear Sir,
I am writing this letter to suggest you a better
agricultural products . You can use higher yield seeds for better production of Agricultural Products. can use modern techniques of irrigation rather than using traditional ways of irrigation . As irrigation facilities are provided by government( by supplying free water) . And also in Nigeria there must not be be a shortage of water. So as can use basin irrigation .
Thanking you in anticipation
abc
a citizen of India
How far chewing gum went to be a known item