Explanation:

Factors which are responsible for the intensification of cyclones in BoB are as follows

• Higher than normal temperatures in the Bay of Bengal (BoB) may be whetting ‘super cyclones’ and the lockdown, indirectly, may have played a role.
• Cyclones gain their energy from the heat and moisture generated from warm ocean surfaces. This year, the BoB has posted record summer temperatures a fall-out, as researchers have warned, of global warming from fossil fuel emissions that has been heating up oceans.
• Lockdown impact: Reduced particulate matter emissions during the lockdown meant fewer aerosols, such as black carbon, that are known to reflect sunlight and heat away from the surface.
• Large sea surface with temperature higher than 27° C, Presence of the Coriolis force enough to create a cyclonic vortex and Small variations in the vertical wind speed are some general factors responsible for the origin of Cyclones in Bay of Bengal region. Hence all statements are correct.