Which causes an increase in the rate of glomerular filtration?

I'd suggest Increasing osmotic pressure of glomerular blood, which I think is the same as decreasing the efferent arteriole diameter.

An increase in glomerular hydrostatic pressure - blood in capillaries of the glomerulus under greater pressure.

Decreasing the afferent vessel diameter means the vessel flowing in, this causes the amount of blood going intoo the glomerulus to decrease which decreases pressure therefore decreasing gfr. increasing the blood colloid osmotic pressure means fluid is drawn back into the blood from the capsule because of an osmotic gradient therefore decreasing nfp and gfr, there is more proteins in the blood than usual and these can not cross the fenestrations in the glomerulus. an increase in capsular pressure means fluid is once again pushed back into the blood from the capsule decreasing GFR.

Thanks everyone for ur answers

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