A patient is at term and in labour, the membranes have ruptured, the liquor contains meconium but the CTG is normal. The cervix is 3cm dilated. What is the single most appropriate action?

The key is D. Fetal scalp blood sample. This is wrong key. Correct key is CTG. [Till CTG is normal we should not switch to other option but continuing CTG. If CTG shows fetal distress then we have to do fetal scalp blood sampling to take decision about probable cesarean section. (Only abnormal CTG is not enough to take decision of cesarean section)].