Answer: A.T1
Given:
$Capacity Factor = \frac {Electricity Generation(MWh)) }{Installed Capacity(MW) * 1000(h)))}$
Lets Find Out the Cpacity Factor of Each Technology:
$Capacity Factor ( T1) = \frac{10000}{(20 * 1000) }*100 = 50%$
$Capacity Factor ( T2) = \frac{9000}{(30 * 1000) }*100 = 30%$
$Capacity Factor ( T3) = \frac{7000}{(15 * 1000) }*100 = 46.67%$
$Capacity Factor ( T4) = \frac{12000}{(40 * 1000) }*100 = 30%$
**Capacity Factor of T1 Technolgy is more than the other technologies,
Hence Option A.T1 Is Correct answer .