Cosmic background radiation indicates what?

A. The universe will explode.

B. The universe is contracting.

C. The universe is at rest.

D. The universe is expanding.

PLEASE HURRY

D.The universe is expanding.

Explanation:

The cosmic microwave background is thought to be leftover radiation from the Big Bang, or the time when the universe began. (The universe is still expanding today, and the expansion rate appears different depending on where you look). The CMB represents the heat left over from the Big Bang.

D.The universe is expanding.

Explanation:

The expansion of the universe is the increase in distance between any two given gravitation-ally unbound parts of the observable universe with time.

the correct answer is modern american cars are not available due to trade restrictions.

trade between cuba and the united states have serious restrictions. the u.s. imposed an economic embargo on cuba, that among other things means that modern american cars are not available due to trade restrictions.

in response to some governmental actions of the authorities from cuba, president john f. kennedy proclaimed an embargo on trade between both countries in february 1962. the trade embargo remains active until this day and was implemented directly by the departments of commerce and the department of treasury.

in president trump’s administration, there is a national security presidential memorandum that "strengthens the policy of the u. s.", affecting trade with cuba.