The basic landform pattern of central america consists of

a. a core of mountains, with lowlands along the caribbean and plains on the pacific coast

s. mountains edging the northern border, with plains in both the east and the west

d. mountains in the north, a high plateau in the center, and lowlands along the southern border

f. rugged mountains along both coasts, with plains in the center

Ithink is a i believe

Your answer is d. silli hope this ! : ) i left an explanation down below if you need it: a sill forms when hot magma squeezes between layers of rock to form a hardened sheet of rock. a sill is basically a tabular sheet intrusion between old layers of sedimentary rock, volcanic beds, or in the direction of foliation inherent in metamorphic rock. the word sill means a concordant intrusive sheet.