a. The gastrointestinal lot, kidney and heart likewise produce chemicals.

b. Standards distalis produces six trophic chemicals.

c. B-lymphocytes give cell-interceded resistance.

d. Insulin opposition brings about an infection called diabetes mellitus.

solution:

a. Valid

b. Valid

c. Bogus in light of the fact that T. lymphocytes give cell-interceded insusceptibility and B-lymphocytes give humoral resistance which is a sort of versatile invulnerable framework.

d. Valid