The question asks us to identify an *obstacle* to the widespread use of renewable energy, based on the passageLet’s break down the passage’s key points
It highlights benefits of renewable energy, such as
Reduced reliance on fossil fuels
Decreased greenhouse gas emissions
Then, it mentions two challenges
Intermittent nature of renewable energy
High initial costs
The term *intermittent* refers to the fact that solar and wind energy are not always available — the sun doesn't shine at night, and the wind doesn't always blowThis inconsistency can make it harder to rely solely on these sources, especially without effective energy storage systems
Now, let’s evaluate each option
(A) Decreased greenhouse gas emissions — This is a benefit, not an obstacle
(B) Intermittent energy production — This is directly stated in the passage as an obstacle
(C) Lower initial costs — This contradicts the passage, which says the initial costs are *high*
(D) Reduced reliance on fossil fuels — Again, this is a benefit, not a problem
Therefore, the correct answer is (B) Intermittent energy production, as it matches one of the clearly stated obstacles