English

The correct preposition to describe movement passing inside a tunnel is 'through'. 'From' indicates origin, 'under' suggests beneath, and 'to' indicates direction toward a place, none of which fit the context as well as 'through'.

The idiom "The birds and the bees" refers to the basic explanation of human sexual reproduction and behavior, often used when talking to children about sex. Therefore, option D is the correct meaning.

The word "downturn" means a decline or decrease, especially in economic terms. "Plunge" means to fall or drop suddenly, which is a suitable synonym. The other options either mean an increase or are unrelated.

The term 'hinterland' refers to the land lying inland from a coast or riverbank, typically the area behind the coast or river. Therefore, option B is correct.

The correct phrasal verb to express complete destruction or elimination of species is 'wiped out.' The other options do not fit the context correctly.

The word 'Lax' means negligent or not sufficiently strict, which matches option B. The other options do not convey the meaning of 'Lax'.

The word 'fostering' means encouraging or promoting the development of something, which aligns closely with 'nurturing'. The other options do not convey this meaning.

The correct preposition to indicate the origin of the present is 'from'. 'This present is from my grandmother' means the grandmother gave the present. Other options do not correctly express this relationship.

Both "Rejuvenate" and "Revitalize" are synonyms of "resuscitate" as they all relate to restoring life, energy, or vitality. "Demolish" is an antonym and thus incorrect.

The word "prevalence" refers to the commonness or widespread occurrence of something. "Currency" can mean widespread acceptance or common use, making it the closest synonym among the options. The other options do not relate to the meaning of prevalence.