Analyse the following statements about some grammatical structures in the text:

I. The verb form “could finally make” (l. 02) expresses a future possibility.
II. The sentence “The light had been collected from the Sun” (l. 07) is in the passive voice.
III. The clause “whether such huge orbital structures would even be legal” (l. 34) expresses a condition.

Which ones are correct? 

Mark the alternative that fills in, correctly and respectively, the blanks in the text in lines 13, 16 and 33 according to standard spelling rules. 

Analyse the statements below according to the vocabulary used in the text, and mark T, if true, or F, if false. 

( ) The word “feasible” (l. 28) could be replaced by “achievable” without changing the meaning.
( ) The prefix un– in “uncertain” (l. 38) and “unrealistic” (l. 17) indicates reversal of action, similar to the verb “undo”.
( ) The word “viable” (l. 32) refers to something that can function successfully.
( ) The term “renewable” (l. 14) is formed by the addition of the prefix re- and the suffix -able, which mean, respectively, “not” and “capability/possibility”.

The correct order of filling in the parentheses, from top to bottom, is:

Analyse the following statements, according to the grammatical structures and their meanings in the text:

I. The clause “have made it more feasible” (l. 27-28) expresses an action that began in the past and continues to have effects in the present.
II. In the sentence “It would require enormous satellite structures” (l. 21), the verb form “would require” indicates a hypothetical situation rather than a real one.
III. In the sentence “making it work is no small task” (l. 21), the structure “making it work” functions as the subject of the sentence.
IV. The structure “it was dismissed as too costly” (l. 26) refers to a past passive construction in the simple past.

Which ones are correct? 

Based on the text as a whole, which statement best summarizes the author’s viewpoint?