32) D

We cannot obtain the answer to this question from the tables. We know that ‘conditionally indispensable’ amino acids are those, which can be formed in our body under some circumstances.

The second paragraph gives information of how some amino acids can be converted into others (phenylalanine to tyrosine and methionine to cysteine). We can therefore infer that tyrosine and cysteine must be conditionally indispensable as they are formed in our body under some conditions.