Question

read the passage.
goodbye, cod
the atlantic cod was once the mainstay of the united states fishing industry. however,
warming of the ocean along the shores of new england has caused the stock of cod to

institute, the gulf of maine is heating up faster than a majority of the rest of the planets
oceans. as a result of warmer ocean waters, female cod produce fewer offspring, and
these fish are less likely to survive to maturity. even though recreational cod fishing was
banned in 2014, and strict limitations were placed on the number of fish commercial
fishermen could catch, these measures have not been enough to protect the cod.
what is the main, or central, idea of the passage?
because cod used to be abundant in the atlantic, it was once the backbone of
the u.s. fishing industry.
because the gulf of maine is warming unusually quickly, atlantic cod are
disappearing.
female cod are producing fewer offspring in the gulf of maine.

Explanation:

El primer enfoque solo presenta el pasado del cod. El tercer enfoque solo se centra en un aspecto específico (las hembras produciendo menos crías). El segundo enfoque abarca la causa (calentamiento del Golfo de Maine) y el efecto (desaparición del cod atlántico), lo que cubre mejor la idea central del texto.

Answer:

Because the Gulf of Maine is warming unusually quickly, Atlantic cod are disappearing.