**Correct option (b) a(a + b + c) > 0**

**Explanation:**

a > 0

ƒ(0) *⇒ *c > 0

ƒ(2) > 0 *⇒ *a + b + c > 0

aƒ(1) > 0* *& cƒ(1) > 0

a(a + b + c) > 0 and c (a + b + c) > 0

a < 0

ƒ(0) < 0 *⇒ *c < 0

ƒ(1) < 0 *⇒* a + b + c < 0

aƒ(1) > 0 & c.ƒ(1) > 0

a(a + b + c) > 0 and c (a + b + c) > 0