Certain hallucinogenic drugs
can be isolated from plant insecticides
are typically taken in large amounts
can cause convulsions and possibly death from an overdose
can only be positively determined through the use of a specific microcrystalline test
are typically of a class of compounds called alkaloids

I'd say D because certain synthetic hallucinogenic drugs can cause convulsions and possible overdose

The average resting heart rate (hrrest) for a 34 year old is 73 beats per minute2. 34 year old males average heart rates of 71 bpm while females average slightly higher at 76 bpm2. the normal resting heart rate range for all adults and children 10 and over is between 60 and 100 beats per minute3. 90% of 34 year olds resting pulses fall within the range of 54 to 92 bpm. in general, an adult's resting heart rate will be lower for those in better athletic condition.

1. a lack of knowledge