Being a responsible person involves making choices that benefit the environment and society. The question asks us to identify which of the given actions is not advisable from this perspective.

Analyzing Advisable Environmental Actions

Let's look at each option to understand its impact and determine if it is advisable for a responsible person:

• Option 1: Using the right amount of ecofriendly pesticide to the crops

  Using pesticides, even eco-friendly ones, should generally be minimized. However, if pest control is necessary, using the right amount of an eco-friendly option is considered a more responsible approach compared to using conventional or excessive amounts of harmful chemicals. So, this action, when necessary and done properly, can be considered advisable within certain contexts.

• Option 2: Segregating wastes in to degradable and non degradable

  Waste segregation is a fundamental step in responsible waste management. Separating degradable (organic) waste from non-degradable (like plastics, metals, glass) allows for composting and recycling, reducing landfill waste and pollution. This is a highly advisable action for any responsible person.

• Option 3: Growing vegetables oneself using good amount of fertilisers and pesticides

  Growing vegetables at home is generally a good practice, promoting self-sufficiency and reducing transportation impacts. However, the phrase "using good amount" of fertilisers and pesticides suggests using potentially excessive or significant quantities. Both fertilisers and pesticides, especially conventional ones, can have negative environmental impacts. Excessive fertilisers can lead to water pollution through runoff (eutrophication), while pesticides can harm beneficial insects (like pollinators), wildlife, and contaminate soil and water. Using "good amounts" implies a heavy reliance on these chemicals, which is generally not advisable from an environmental responsibility standpoint.

• Option 4: Recycle plastics using modern techniques

  Recycling is a crucial part of reducing waste and conserving resources. Recycling plastics helps to reduce the need for producing new plastic, which saves energy and reduces pollution. Using modern techniques can make the recycling process more efficient and effective. This is a highly advisable action for a responsible person.

Conclusion on Advisable Actions

Based on the analysis, using "good amount" of fertilisers and pesticides when growing vegetables is the action that is least advisable for a responsible person concerned about environmental health. While growing food oneself is good, relying heavily on chemical inputs like fertilisers and pesticides can be detrimental to the environment.