Solution:
A binomial means an expression containing single variable having two terms.For example,2 x²+ 5 x
A Trinomial means an expression containing single variable having three terms.For example, 3x³+4 x + 2
So , in the question given , the trinomial is : a x²+ b x+ c-------(1)
And the binomial is : p x²+ q x
If we put c=0 in the trinomial represented in equation (1), it get converted into binomial.and we can factorize p x²+ q x in the same way as a x²+ b x+ c.
So, option (C) c=0, is true option among four options provided.
