'hard' is the adverb form, not 'hardly'. 'Hardly' means 'scarcely', while 'hard' means 'with effort'.

'Prevalent' means widespread and common. It fits the context that renewable energy is becoming more widespread as countries focus on emissions reduction.

Pragmatic refers to a practical, realistic approach based on actual circumstances rather than theory.

The passage explicitly mentions 'concerns about data privacy and job displacement remain prevalent' while acknowledging AI benefits. Option B accurately captures both aspects.

'The startup's approach' is singular, requiring 'has' instead of 'have'. The subject is 'approach' (singular), not 'countries'.

The passage explicitly states 'lack of employment benefits' as a challenge, making option A unsupported. Other options are directly mentioned or implied in the text.

Ephemeral means short-lived or temporary. Transient has the same meaning.

The passage clearly states that climate change poses challenges and threatens crop yields in agriculture.

After 'to' (infinitive marker), use the base form of the verb 'implement', not its other forms.

An adjective is needed to describe 'approach'. 'Innovative' is the correct adjective form.