Sentence Completion: Conjunctions and Prepositions

The preposition of is used to indicate a relationship, association or cause common with something. In the sentence, homogeneity is the quality of being of the same or a similar nature, thereby this relationship is the association indicated by the preposition of. Thus, this is the correct answer.

The preposition 'by' indicates next to or along something. It is a preposition of place and is correct in this context as the sentence talks about the influence upon the human life because of the physiography of the region.

The prepositional phrase 'passed away' indicates death or dying. Thus, this is the correct answer.

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The conjunction 'whether' is used to indicate a clause with alternative conditions or possibilities. This sentence gives her two choices to go or stay. Thus, this is the correct answer.
The conjunction 'if' is used to indicate a modification to a statement, usually to add something negative or to indicate that there is less of something than originally expected.

This is the correct answer. The conjunction and indicates an additional thing, situation or fact. The report caused a massive uproar, in addition to which it stalled the parliament.

This is the correct option because the preposition to indicates the position of somebody or something. In the given sentence, it is used to show the place where the African elephants are now found.

The conjunction though is used to indicate a clause that happens in spite of the fact stated. The independent clause in this sentence is, the movie has become a sleeper hit of the summer and the conjunction though indicates that this happened in spite of it not having any well-known actors in it. Thus, this is the correct answer.

This is the correct answer. The preposition 'about' refers to a connection with something. In this sentence, it shows the connection between the terms of the draft agreement and the cooperation on investment required to achieve the results.

The preposition above indicates along the coastline....maybe on land or seaside. As no location is specified this is the correct answer.

This is the correct answer. The subordinating conjunction so that is used to indicate the clause which shows the consequence of the independent clause, where it shows what will happen as a result of. This clause tells us what will be avoided as a result of cleaning footwear.

The conjunction but is used to introduce a clause or a new sentence that adds information such as background or reasoning. The sentence says that Malthus's theory was influential. Then it adds information to this by stating that it was also challenged. This is therefore, the correct conjunction choice.

The conjunction how is used to mention a fact or event. In this sentence, it indicates the fact that this particular article researches something. Thus, this is the correct choice.

The preposition on indicates something that is concerned with or relating to a particular subject, thing or activity. Thus, this is the correct answer option as modern industrial economy is dependent on the infrastructure.