Which expression results in a rational number?

a. 1.5 + sqrt 1.5

b. 12 - sqrt 12

c. 3/4 * sqrt 3/4

d 25 / sqrt 25

answer quick! brainliest for the first answer

option D is rational

Step-by-step explanation:

A rational number is a number that can be written in the form of fraction or integer

here in the given question

A) 1.5 + √1.5

now,

√1.5 is not rational as √1.5 = 1.2247448713915890490986420373529

hence A is not rational

b) 12 - √12

√12 is not rational as √12 = 3.4641016151377545870548926830117

hence B is not rational

c)

here,

is not rational

D)

now,

√25 = 5

hence,

= = 5

therefore,

option D is rational