This is a find-the-odd-one-out question, so the trick is to spot the value that is actually healthy. Three options are classic threats to a small child and one is a normal lab figure.
Focus on the maternal hemoglobin of 11 gm%. In pregnancy, anemia is defined as a hemoglobin below 11 gm/dL. At exactly 11 the mother sits at the normal threshold and is not anemic, so her baby is not put at risk on that account. That marks it as the exception the question wants.
The other three are well known dangers for children under five. Poor nutrition slows growth and cripples immune defenses. Being born too small carries the highest early risk of death and disease. Repeated infections, especially chest and gut infections, are the top killers in this age group worldwide.
Therefore the factor that does not damage the child is the normal maternal hemoglobin.
\[\boxed{\text{Maternal Hb of 11 gm\%}}\]